id	sid	tid	token	lemma	pos
cord-003571-upogtny6	1	1	key	key	NN
cord-003571-upogtny6	1	2	:	:	:
cord-003571-upogtny6	1	3	cord-003571-upogtny6	cord-003571-upogtny6	VBG
cord-003571-upogtny6	1	4	authors	author	NNS
cord-003571-upogtny6	1	5	:	:	:
cord-003571-upogtny6	1	6	Viboud	Viboud	NNP
cord-003571-upogtny6	1	7	,	,	,
cord-003571-upogtny6	1	8	Cécile	Cécile	NNP
cord-003571-upogtny6	1	9	;	;	:
cord-003571-upogtny6	1	10	Lessler	Lessler	NNP
cord-003571-upogtny6	1	11	,	,	,
cord-003571-upogtny6	1	12	Justin	Justin	NNP
cord-003571-upogtny6	1	13	title	title	NN
cord-003571-upogtny6	1	14	:	:	:
cord-003571-upogtny6	2	1	The	the	DT
cord-003571-upogtny6	2	2	1918	1918	CD
cord-003571-upogtny6	2	3	Influenza	Influenza	NNP
cord-003571-upogtny6	2	4	Pandemic	Pandemic	NNP
cord-003571-upogtny6	2	5	:	:	:
cord-003571-upogtny6	2	6	Looking	look	VBG
cord-003571-upogtny6	2	7	Back	back	RB
cord-003571-upogtny6	2	8	,	,	,
cord-003571-upogtny6	2	9	Looking	look	VBG
cord-003571-upogtny6	2	10	Forward	Forward	NNP
cord-003571-upogtny6	2	11	date	date	NN
cord-003571-upogtny6	2	12	:	:	:
cord-003571-upogtny6	2	13	2018	2018	CD
cord-003571-upogtny6	2	14	-	-	SYM
cord-003571-upogtny6	2	15	10	10	CD
cord-003571-upogtny6	2	16	-	-	SYM
cord-003571-upogtny6	2	17	20	20	CD
cord-003571-upogtny6	2	18	journal	journal	NN
cord-003571-upogtny6	2	19	:	:	:
cord-003571-upogtny6	3	1	Am	be	VBP
cord-003571-upogtny6	3	2	J	J	NNP
cord-003571-upogtny6	3	3	Epidemiol	Epidemiol	NNP
cord-003571-upogtny6	3	4	DOI	doi	NN
cord-003571-upogtny6	3	5	:	:	:
cord-003571-upogtny6	4	1	10.1093	10.1093	CD
cord-003571-upogtny6	4	2	/	/	SYM
cord-003571-upogtny6	4	3	aje	aje	NNP
cord-003571-upogtny6	4	4	/	/	,
cord-003571-upogtny6	4	5	kwy207	kwy207	NNP
cord-003571-upogtny6	4	6	sha	sha	NNP
cord-003571-upogtny6	4	7	:	:	:
cord-003571-upogtny6	4	8	83a7484bf325c605f93c0888230c543f3a148add	83a7484bf325c605f93c0888230c543f3a148add	CD
cord-003571-upogtny6	4	9	doc_id	doc_id	CD
cord-003571-upogtny6	4	10	:	:	:
cord-003571-upogtny6	4	11	3571	3571	CD
cord-003571-upogtny6	4	12	cord_uid	cord_uid	NNS
cord-003571-upogtny6	4	13	:	:	:
cord-003571-upogtny6	4	14	upogtny6	upogtny6	VBN
cord-003571-upogtny6	5	1	In	in	IN
cord-003571-upogtny6	5	2	commemoration	commemoration	NN
cord-003571-upogtny6	5	3	of	of	IN
cord-003571-upogtny6	5	4	the	the	DT
cord-003571-upogtny6	5	5	centennial	centennial	NN
cord-003571-upogtny6	5	6	of	of	IN
cord-003571-upogtny6	5	7	the	the	DT
cord-003571-upogtny6	5	8	1918	1918	CD
cord-003571-upogtny6	5	9	influenza	influenza	NN
cord-003571-upogtny6	5	10	pandemic	pandemic	NN
cord-003571-upogtny6	5	11	,	,	,
cord-003571-upogtny6	5	12	the	the	DT
cord-003571-upogtny6	5	13	American	American	NNP
cord-003571-upogtny6	5	14	Journal	Journal	NNP
cord-003571-upogtny6	5	15	of	of	IN
cord-003571-upogtny6	5	16	Epidemiology	Epidemiology	NNP
cord-003571-upogtny6	5	17	has	have	VBZ
cord-003571-upogtny6	5	18	convened	convene	VBN
cord-003571-upogtny6	5	19	a	a	DT
cord-003571-upogtny6	5	20	collection	collection	NN
cord-003571-upogtny6	5	21	of	of	IN
cord-003571-upogtny6	5	22	12	12	CD
cord-003571-upogtny6	5	23	articles	article	NNS
cord-003571-upogtny6	5	24	that	that	WDT
cord-003571-upogtny6	5	25	further	further	RB
cord-003571-upogtny6	5	26	illuminate	illuminate	VBP
cord-003571-upogtny6	5	27	the	the	DT
cord-003571-upogtny6	5	28	epidemiology	epidemiology	NN
cord-003571-upogtny6	5	29	of	of	IN
cord-003571-upogtny6	5	30	that	that	DT
cord-003571-upogtny6	5	31	pandemic	pandemic	NN
cord-003571-upogtny6	5	32	and	and	CC
cord-003571-upogtny6	5	33	consider	consider	VB
cord-003571-upogtny6	5	34	whether	whether	IN
cord-003571-upogtny6	5	35	we	-PRON-	PRP
cord-003571-upogtny6	5	36	would	would	MD
cord-003571-upogtny6	5	37	be	be	VB
cord-003571-upogtny6	5	38	more	more	RBR
cord-003571-upogtny6	5	39	prepared	prepared	JJ
cord-003571-upogtny6	5	40	if	if	IN
cord-003571-upogtny6	5	41	an	an	DT
cord-003571-upogtny6	5	42	equally	equally	RB
cord-003571-upogtny6	5	43	deadly	deadly	JJ
cord-003571-upogtny6	5	44	influenza	influenza	NN
cord-003571-upogtny6	5	45	virus	virus	NN
cord-003571-upogtny6	5	46	were	be	VBD
cord-003571-upogtny6	5	47	to	to	TO
cord-003571-upogtny6	5	48	emerge	emerge	VB
cord-003571-upogtny6	5	49	again	again	RB
cord-003571-upogtny6	5	50	.	.	.
cord-003571-upogtny6	6	1	In	in	IN
cord-003571-upogtny6	6	2	the	the	DT
cord-003571-upogtny6	6	3	present	present	JJ
cord-003571-upogtny6	6	4	commentary	commentary	NN
cord-003571-upogtny6	6	5	,	,	,
cord-003571-upogtny6	6	6	we	-PRON-	PRP
cord-003571-upogtny6	6	7	place	place	VBP
cord-003571-upogtny6	6	8	these	these	DT
cord-003571-upogtny6	6	9	12	12	CD
cord-003571-upogtny6	6	10	articles	article	NNS
cord-003571-upogtny6	6	11	in	in	IN
cord-003571-upogtny6	6	12	the	the	DT
cord-003571-upogtny6	6	13	context	context	NN
cord-003571-upogtny6	6	14	of	of	IN
cord-003571-upogtny6	6	15	a	a	DT
cord-003571-upogtny6	6	16	growing	grow	VBG
cord-003571-upogtny6	6	17	body	body	NN
cord-003571-upogtny6	6	18	of	of	IN
cord-003571-upogtny6	6	19	work	work	NN
cord-003571-upogtny6	6	20	on	on	IN
cord-003571-upogtny6	6	21	the	the	DT
cord-003571-upogtny6	6	22	archeo	archeo	NN
cord-003571-upogtny6	6	23	-	-	HYPH
cord-003571-upogtny6	6	24	epidemiology	epidemiology	NN
cord-003571-upogtny6	6	25	of	of	IN
cord-003571-upogtny6	6	26	past	past	JJ
cord-003571-upogtny6	6	27	pandemics	pandemic	NNS
cord-003571-upogtny6	6	28	,	,	,
cord-003571-upogtny6	6	29	the	the	DT
cord-003571-upogtny6	6	30	socioeconomic	socioeconomic	JJ
cord-003571-upogtny6	6	31	and	and	CC
cord-003571-upogtny6	6	32	geographic	geographic	JJ
cord-003571-upogtny6	6	33	drivers	driver	NNS
cord-003571-upogtny6	6	34	of	of	IN
cord-003571-upogtny6	6	35	influenza	influenza	NN
cord-003571-upogtny6	6	36	mortality	mortality	NN
cord-003571-upogtny6	6	37	and	and	CC
cord-003571-upogtny6	6	38	natality	natality	NN
cord-003571-upogtny6	6	39	impact	impact	NN
cord-003571-upogtny6	6	40	,	,	,
cord-003571-upogtny6	6	41	and	and	CC
cord-003571-upogtny6	6	42	renewed	renew	VBD
cord-003571-upogtny6	6	43	interest	interest	NN
cord-003571-upogtny6	6	44	in	in	IN
cord-003571-upogtny6	6	45	immune	immune	JJ
cord-003571-upogtny6	6	46	imprinting	imprinting	NN
cord-003571-upogtny6	6	47	mechanisms	mechanism	NNS
cord-003571-upogtny6	6	48	and	and	CC
cord-003571-upogtny6	6	49	the	the	DT
cord-003571-upogtny6	6	50	development	development	NN
cord-003571-upogtny6	6	51	of	of	IN
cord-003571-upogtny6	6	52	novel	novel	JJ
cord-003571-upogtny6	6	53	influenza	influenza	NN
cord-003571-upogtny6	6	54	vaccines	vaccine	NNS
cord-003571-upogtny6	6	55	.	.	.
cord-003571-upogtny6	7	1	We	-PRON-	PRP
cord-003571-upogtny6	7	2	also	also	RB
cord-003571-upogtny6	7	3	highlight	highlight	VBP
cord-003571-upogtny6	7	4	persisting	persist	VBG
cord-003571-upogtny6	7	5	mysteries	mystery	NNS
cord-003571-upogtny6	7	6	in	in	IN
cord-003571-upogtny6	7	7	the	the	DT
cord-003571-upogtny6	7	8	origins	origin	NNS
cord-003571-upogtny6	7	9	and	and	CC
cord-003571-upogtny6	7	10	severity	severity	NN
cord-003571-upogtny6	7	11	of	of	IN
cord-003571-upogtny6	7	12	the	the	DT
cord-003571-upogtny6	7	13	1918	1918	CD
cord-003571-upogtny6	7	14	pandemic	pandemic	NN
cord-003571-upogtny6	7	15	and	and	CC
cord-003571-upogtny6	7	16	the	the	DT
cord-003571-upogtny6	7	17	need	need	NN
cord-003571-upogtny6	7	18	to	to	TO
cord-003571-upogtny6	7	19	preserve	preserve	VB
cord-003571-upogtny6	7	20	rapidly	rapidly	RB
cord-003571-upogtny6	7	21	decaying	decay	VBG
cord-003571-upogtny6	7	22	information	information	NN
cord-003571-upogtny6	7	23	that	that	WDT
cord-003571-upogtny6	7	24	may	may	MD
cord-003571-upogtny6	7	25	provide	provide	VB
cord-003571-upogtny6	7	26	treasure	treasure	NN
cord-003571-upogtny6	7	27	troves	trove	NNS
cord-003571-upogtny6	7	28	for	for	IN
cord-003571-upogtny6	7	29	future	future	JJ
cord-003571-upogtny6	7	30	generations	generation	NNS
cord-003571-upogtny6	7	31	.	.	.
cord-003571-upogtny6	8	1	Initially	initially	RB
cord-003571-upogtny6	8	2	submitted	submit	VBN
cord-003571-upogtny6	8	3	August	August	NNP
cord-003571-upogtny6	8	4	28	28	CD
cord-003571-upogtny6	8	5	,	,	,
cord-003571-upogtny6	8	6	2018	2018	CD
cord-003571-upogtny6	8	7	;	;	,
cord-003571-upogtny6	8	8	accepted	accept	VBN
cord-003571-upogtny6	8	9	for	for	IN
cord-003571-upogtny6	8	10	publication	publication	NN
cord-003571-upogtny6	8	11	September	September	NNP
cord-003571-upogtny6	8	12	6	6	CD
cord-003571-upogtny6	8	13	,	,	,
cord-003571-upogtny6	8	14	2018	2018	CD
cord-003571-upogtny6	8	15	.	.	.
cord-003571-upogtny6	9	1	In	in	IN
cord-003571-upogtny6	9	2	commemoration	commemoration	NN
cord-003571-upogtny6	9	3	of	of	IN
cord-003571-upogtny6	9	4	the	the	DT
cord-003571-upogtny6	9	5	centennial	centennial	NN
cord-003571-upogtny6	9	6	of	of	IN
cord-003571-upogtny6	9	7	the	the	DT
cord-003571-upogtny6	9	8	1918	1918	CD
cord-003571-upogtny6	9	9	influenza	influenza	NN
cord-003571-upogtny6	9	10	pandemic	pandemic	NN
cord-003571-upogtny6	9	11	,	,	,
cord-003571-upogtny6	9	12	the	the	DT
cord-003571-upogtny6	9	13	American	American	NNP
cord-003571-upogtny6	9	14	Journal	Journal	NNP
cord-003571-upogtny6	9	15	of	of	IN
cord-003571-upogtny6	9	16	Epidemiology	Epidemiology	NNP
cord-003571-upogtny6	9	17	has	have	VBZ
cord-003571-upogtny6	9	18	convened	convene	VBN
cord-003571-upogtny6	9	19	a	a	DT
cord-003571-upogtny6	9	20	collection	collection	NN
cord-003571-upogtny6	9	21	of	of	IN
cord-003571-upogtny6	9	22	12	12	CD
cord-003571-upogtny6	9	23	articles	article	NNS
cord-003571-upogtny6	9	24	that	that	WDT
cord-003571-upogtny6	9	25	further	further	RB
cord-003571-upogtny6	9	26	illuminate	illuminate	VBP
cord-003571-upogtny6	9	27	the	the	DT
cord-003571-upogtny6	9	28	epidemiology	epidemiology	NN
cord-003571-upogtny6	9	29	of	of	IN
cord-003571-upogtny6	9	30	that	that	DT
cord-003571-upogtny6	9	31	pandemic	pandemic	NN
cord-003571-upogtny6	9	32	and	and	CC
cord-003571-upogtny6	9	33	consider	consider	VB
cord-003571-upogtny6	9	34	whether	whether	IN
cord-003571-upogtny6	9	35	we	-PRON-	PRP
cord-003571-upogtny6	9	36	would	would	MD
cord-003571-upogtny6	9	37	be	be	VB
cord-003571-upogtny6	9	38	more	more	RBR
cord-003571-upogtny6	9	39	prepared	prepared	JJ
cord-003571-upogtny6	9	40	if	if	IN
cord-003571-upogtny6	9	41	an	an	DT
cord-003571-upogtny6	9	42	equally	equally	RB
cord-003571-upogtny6	9	43	deadly	deadly	JJ
cord-003571-upogtny6	9	44	influenza	influenza	NN
cord-003571-upogtny6	9	45	virus	virus	NN
cord-003571-upogtny6	9	46	were	be	VBD
cord-003571-upogtny6	9	47	to	to	TO
cord-003571-upogtny6	9	48	emerge	emerge	VB
cord-003571-upogtny6	9	49	again	again	RB
cord-003571-upogtny6	9	50	.	.	.
cord-003571-upogtny6	10	1	In	in	IN
cord-003571-upogtny6	10	2	the	the	DT
cord-003571-upogtny6	10	3	present	present	JJ
cord-003571-upogtny6	10	4	commentary	commentary	NN
cord-003571-upogtny6	10	5	,	,	,
cord-003571-upogtny6	10	6	we	-PRON-	PRP
cord-003571-upogtny6	10	7	place	place	VBP
cord-003571-upogtny6	10	8	these	these	DT
cord-003571-upogtny6	10	9	12	12	CD
cord-003571-upogtny6	10	10	articles	article	NNS
cord-003571-upogtny6	10	11	in	in	IN
cord-003571-upogtny6	10	12	the	the	DT
cord-003571-upogtny6	10	13	context	context	NN
cord-003571-upogtny6	10	14	of	of	IN
cord-003571-upogtny6	10	15	a	a	DT
cord-003571-upogtny6	10	16	growing	grow	VBG
cord-003571-upogtny6	10	17	body	body	NN
cord-003571-upogtny6	10	18	of	of	IN
cord-003571-upogtny6	10	19	work	work	NN
cord-003571-upogtny6	10	20	on	on	IN
cord-003571-upogtny6	10	21	the	the	DT
cord-003571-upogtny6	10	22	archeo	archeo	NN
cord-003571-upogtny6	10	23	-	-	HYPH
cord-003571-upogtny6	10	24	epidemiology	epidemiology	NN
cord-003571-upogtny6	10	25	of	of	IN
cord-003571-upogtny6	10	26	past	past	JJ
cord-003571-upogtny6	10	27	pandemics	pandemic	NNS
cord-003571-upogtny6	10	28	,	,	,
cord-003571-upogtny6	10	29	the	the	DT
cord-003571-upogtny6	10	30	socioeconomic	socioeconomic	JJ
cord-003571-upogtny6	10	31	and	and	CC
cord-003571-upogtny6	10	32	geographic	geographic	JJ
cord-003571-upogtny6	10	33	drivers	driver	NNS
cord-003571-upogtny6	10	34	of	of	IN
cord-003571-upogtny6	10	35	influenza	influenza	NN
cord-003571-upogtny6	10	36	mortality	mortality	NN
cord-003571-upogtny6	10	37	and	and	CC
cord-003571-upogtny6	10	38	natality	natality	NN
cord-003571-upogtny6	10	39	impact	impact	NN
cord-003571-upogtny6	10	40	,	,	,
cord-003571-upogtny6	10	41	and	and	CC
cord-003571-upogtny6	10	42	renewed	renew	VBD
cord-003571-upogtny6	10	43	interest	interest	NN
cord-003571-upogtny6	10	44	in	in	IN
cord-003571-upogtny6	10	45	immune	immune	JJ
cord-003571-upogtny6	10	46	imprinting	imprinting	NN
cord-003571-upogtny6	10	47	mechanisms	mechanism	NNS
cord-003571-upogtny6	10	48	and	and	CC
cord-003571-upogtny6	10	49	the	the	DT
cord-003571-upogtny6	10	50	development	development	NN
cord-003571-upogtny6	10	51	of	of	IN
cord-003571-upogtny6	10	52	novel	novel	JJ
cord-003571-upogtny6	10	53	influenza	influenza	NN
cord-003571-upogtny6	10	54	vaccines	vaccine	NNS
cord-003571-upogtny6	10	55	.	.	.
cord-003571-upogtny6	11	1	We	-PRON-	PRP
cord-003571-upogtny6	11	2	also	also	RB
cord-003571-upogtny6	11	3	highlight	highlight	VBP
cord-003571-upogtny6	11	4	persisting	persist	VBG
cord-003571-upogtny6	11	5	mysteries	mystery	NNS
cord-003571-upogtny6	11	6	in	in	IN
cord-003571-upogtny6	11	7	the	the	DT
cord-003571-upogtny6	11	8	origins	origin	NNS
cord-003571-upogtny6	11	9	and	and	CC
cord-003571-upogtny6	11	10	severity	severity	NN
cord-003571-upogtny6	11	11	of	of	IN
cord-003571-upogtny6	11	12	the	the	DT
cord-003571-upogtny6	11	13	1918	1918	CD
cord-003571-upogtny6	11	14	pandemic	pandemic	NN
cord-003571-upogtny6	11	15	and	and	CC
cord-003571-upogtny6	11	16	the	the	DT
cord-003571-upogtny6	11	17	need	need	NN
cord-003571-upogtny6	11	18	to	to	TO
cord-003571-upogtny6	11	19	preserve	preserve	VB
cord-003571-upogtny6	11	20	rapidly	rapidly	RB
cord-003571-upogtny6	11	21	decaying	decay	VBG
cord-003571-upogtny6	11	22	information	information	NN
cord-003571-upogtny6	11	23	that	that	WDT
cord-003571-upogtny6	11	24	may	may	MD
cord-003571-upogtny6	11	25	provide	provide	VB
cord-003571-upogtny6	11	26	treasure	treasure	NN
cord-003571-upogtny6	11	27	troves	trove	NNS
cord-003571-upogtny6	11	28	for	for	IN
cord-003571-upogtny6	11	29	future	future	JJ
cord-003571-upogtny6	11	30	generations	generation	NNS
cord-003571-upogtny6	11	31	.	.	.
cord-003571-upogtny6	12	1	age	age	NN
cord-003571-upogtny6	12	2	patterns	pattern	NNS
cord-003571-upogtny6	12	3	;	;	:
cord-003571-upogtny6	12	4	history	history	NN
cord-003571-upogtny6	12	5	of	of	IN
cord-003571-upogtny6	12	6	epidemiology	epidemiology	NN
cord-003571-upogtny6	12	7	;	;	,
cord-003571-upogtny6	12	8	influenza	influenza	NN
cord-003571-upogtny6	12	9	;	;	:
cord-003571-upogtny6	12	10	mortality	mortality	NN
cord-003571-upogtny6	12	11	;	;	:
cord-003571-upogtny6	12	12	pandemic	pandemic	NN
cord-003571-upogtny6	12	13	;	;	:
cord-003571-upogtny6	12	14	prior	prior	JJ
cord-003571-upogtny6	12	15	immunity	immunity	NN
cord-003571-upogtny6	12	16	One	one	CD
cord-003571-upogtny6	12	17	hundred	hundred	CD
cord-003571-upogtny6	12	18	years	year	NNS
cord-003571-upogtny6	12	19	after	after	IN
cord-003571-upogtny6	12	20	the	the	DT
cord-003571-upogtny6	12	21	fact	fact	NN
cord-003571-upogtny6	12	22	,	,	,
cord-003571-upogtny6	12	23	the	the	DT
cord-003571-upogtny6	12	24	1918	1918	CD
cord-003571-upogtny6	12	25	influenza	influenza	NN
cord-003571-upogtny6	12	26	pandemic	pandemic	NN
cord-003571-upogtny6	12	27	remains	remain	VBZ
cord-003571-upogtny6	12	28	one	one	CD
cord-003571-upogtny6	12	29	of	of	IN
cord-003571-upogtny6	12	30	the	the	DT
cord-003571-upogtny6	12	31	most	most	RBS
cord-003571-upogtny6	12	32	important	important	JJ
cord-003571-upogtny6	12	33	epidemics	epidemic	NNS
cord-003571-upogtny6	12	34	of	of	IN
cord-003571-upogtny6	12	35	the	the	DT
cord-003571-upogtny6	12	36	modern	modern	JJ
cord-003571-upogtny6	12	37	medical	medical	JJ
cord-003571-upogtny6	12	38	era	era	NN
cord-003571-upogtny6	12	39	;	;	:
cord-003571-upogtny6	12	40	it	-PRON-	PRP
cord-003571-upogtny6	12	41	was	be	VBD
cord-003571-upogtny6	12	42	significant	significant	JJ
cord-003571-upogtny6	12	43	for	for	IN
cord-003571-upogtny6	12	44	its	-PRON-	PRP$
cord-003571-upogtny6	12	45	impact	impact	NN
cord-003571-upogtny6	12	46	on	on	IN
cord-003571-upogtny6	12	47	both	both	DT
cord-003571-upogtny6	12	48	human	human	JJ
cord-003571-upogtny6	12	49	health	health	NN
cord-003571-upogtny6	12	50	and	and	CC
cord-003571-upogtny6	12	51	the	the	DT
cord-003571-upogtny6	12	52	development	development	NN
cord-003571-upogtny6	12	53	of	of	IN
cord-003571-upogtny6	12	54	epidemiology	epidemiology	NN
cord-003571-upogtny6	12	55	and	and	CC
cord-003571-upogtny6	12	56	other	other	JJ
cord-003571-upogtny6	12	57	medical	medical	JJ
cord-003571-upogtny6	12	58	sciences	science	NNS
cord-003571-upogtny6	12	59	.	.	.
cord-003571-upogtny6	13	1	Still	still	RB
cord-003571-upogtny6	13	2	,	,	,
cord-003571-upogtny6	13	3	as	as	IN
cord-003571-upogtny6	13	4	we	-PRON-	PRP
cord-003571-upogtny6	13	5	mark	mark	VBP
cord-003571-upogtny6	13	6	its	-PRON-	PRP$
cord-003571-upogtny6	13	7	centennial	centennial	NN
cord-003571-upogtny6	13	8	,	,	,
cord-003571-upogtny6	13	9	it	-PRON-	PRP
cord-003571-upogtny6	13	10	is	be	VBZ
cord-003571-upogtny6	13	11	sobering	sobering	JJ
cord-003571-upogtny6	13	12	to	to	TO
cord-003571-upogtny6	13	13	realize	realize	VB
cord-003571-upogtny6	13	14	how	how	WRB
cord-003571-upogtny6	13	15	little	little	JJ
cord-003571-upogtny6	13	16	we	-PRON-	PRP
cord-003571-upogtny6	13	17	understand	understand	VBP
cord-003571-upogtny6	13	18	about	about	IN
cord-003571-upogtny6	13	19	the	the	DT
cord-003571-upogtny6	13	20	origins	origin	NNS
cord-003571-upogtny6	13	21	and	and	CC
cord-003571-upogtny6	13	22	lethality	lethality	NN
cord-003571-upogtny6	13	23	of	of	IN
cord-003571-upogtny6	13	24	this	this	DT
cord-003571-upogtny6	13	25	unusual	unusual	JJ
cord-003571-upogtny6	13	26	outbreak	outbreak	NN
cord-003571-upogtny6	13	27	despite	despite	IN
cord-003571-upogtny6	13	28	decades	decade	NNS
cord-003571-upogtny6	13	29	of	of	IN
cord-003571-upogtny6	13	30	intense	intense	JJ
cord-003571-upogtny6	13	31	multidisciplinary	multidisciplinary	JJ
cord-003571-upogtny6	13	32	research	research	NN
cord-003571-upogtny6	13	33	.	.	.
cord-003571-upogtny6	14	1	Although	although	IN
cord-003571-upogtny6	14	2	it	-PRON-	PRP
cord-003571-upogtny6	14	3	would	would	MD
cord-003571-upogtny6	14	4	be	be	VB
cord-003571-upogtny6	14	5	80	80	CD
cord-003571-upogtny6	14	6	years	year	NNS
cord-003571-upogtny6	14	7	before	before	IN
cord-003571-upogtny6	14	8	it	-PRON-	PRP
cord-003571-upogtny6	14	9	was	be	VBD
cord-003571-upogtny6	14	10	possible	possible	JJ
cord-003571-upogtny6	14	11	to	to	TO
cord-003571-upogtny6	14	12	fully	fully	RB
cord-003571-upogtny6	14	13	characterize	characterize	VB
cord-003571-upogtny6	14	14	the	the	DT
cord-003571-upogtny6	14	15	virus	virus	NN
cord-003571-upogtny6	14	16	responsible	responsible	JJ
cord-003571-upogtny6	14	17	for	for	IN
cord-003571-upogtny6	14	18	the	the	DT
cord-003571-upogtny6	14	19	1918	1918	CD
cord-003571-upogtny6	14	20	pandemic	pandemic	NN
cord-003571-upogtny6	14	21	(	(	-LRB-
cord-003571-upogtny6	14	22	1	1	CD
cord-003571-upogtny6	14	23	)	)	-RRB-
cord-003571-upogtny6	14	24	,	,	,
cord-003571-upogtny6	14	25	contemporaneous	contemporaneous	JJ
cord-003571-upogtny6	14	26	medical	medical	JJ
cord-003571-upogtny6	14	27	authorities	authority	NNS
cord-003571-upogtny6	14	28	put	put	VBD
cord-003571-upogtny6	14	29	commendable	commendable	JJ
cord-003571-upogtny6	14	30	effort	effort	NN
cord-003571-upogtny6	14	31	into	into	IN
cord-003571-upogtny6	14	32	reporting	report	VBG
cord-003571-upogtny6	14	33	detailed	detailed	JJ
cord-003571-upogtny6	14	34	epidemiologic	epidemiologic	JJ
cord-003571-upogtny6	14	35	data	datum	NNS
cord-003571-upogtny6	14	36	on	on	IN
cord-003571-upogtny6	14	37	the	the	DT
cord-003571-upogtny6	14	38	progression	progression	NN
cord-003571-upogtny6	14	39	of	of	IN
cord-003571-upogtny6	14	40	the	the	DT
cord-003571-upogtny6	14	41	pandemic	pandemic	NN
cord-003571-upogtny6	14	42	that	that	WDT
cord-003571-upogtny6	14	43	ranged	range	VBD
cord-003571-upogtny6	14	44	from	from	IN
cord-003571-upogtny6	14	45	individual	individual	JJ
cord-003571-upogtny6	14	46	-	-	HYPH
cord-003571-upogtny6	14	47	level	level	NN
cord-003571-upogtny6	14	48	clinical	clinical	JJ
cord-003571-upogtny6	14	49	records	record	NNS
cord-003571-upogtny6	14	50	to	to	IN
cord-003571-upogtny6	14	51	aggregated	aggregate	VBN
cord-003571-upogtny6	14	52	city	city	NN
cord-003571-upogtny6	14	53	-	-	HYPH
cord-003571-upogtny6	14	54	level	level	NN
cord-003571-upogtny6	14	55	vital	vital	JJ
cord-003571-upogtny6	14	56	statistics	statistic	NNS
cord-003571-upogtny6	14	57	(	(	-LRB-
cord-003571-upogtny6	14	58	2	2	CD
cord-003571-upogtny6	14	59	,	,	,
cord-003571-upogtny6	14	60	3	3	CD
cord-003571-upogtny6	14	61	)	)	-RRB-
cord-003571-upogtny6	14	62	.	.	.
cord-003571-upogtny6	15	1	In	in	IN
cord-003571-upogtny6	15	2	addition	addition	NN
cord-003571-upogtny6	15	3	to	to	IN
cord-003571-upogtny6	15	4	quantitative	quantitative	JJ
cord-003571-upogtny6	15	5	epidemiologic	epidemiologic	JJ
cord-003571-upogtny6	15	6	data	datum	NNS
cord-003571-upogtny6	15	7	,	,	,
cord-003571-upogtny6	15	8	there	there	EX
cord-003571-upogtny6	15	9	exist	exist	VBP
cord-003571-upogtny6	15	10	many	many	JJ
cord-003571-upogtny6	15	11	anecdotal	anecdotal	JJ
cord-003571-upogtny6	15	12	reports	report	NNS
cord-003571-upogtny6	15	13	from	from	IN
cord-003571-upogtny6	15	14	clinicians	clinician	NNS
cord-003571-upogtny6	15	15	,	,	,
cord-003571-upogtny6	15	16	particularly	particularly	RB
cord-003571-upogtny6	15	17	those	those	DT
cord-003571-upogtny6	15	18	who	who	WP
cord-003571-upogtny6	15	19	served	serve	VBD
cord-003571-upogtny6	15	20	military	military	JJ
cord-003571-upogtny6	15	21	populations	population	NNS
cord-003571-upogtny6	15	22	,	,	,
cord-003571-upogtny6	15	23	that	that	WDT
cord-003571-upogtny6	15	24	have	have	VBP
cord-003571-upogtny6	15	25	been	be	VBN
cord-003571-upogtny6	15	26	mined	mine	VBN
cord-003571-upogtny6	15	27	to	to	TO
cord-003571-upogtny6	15	28	provide	provide	VB
cord-003571-upogtny6	15	29	modern	modern	JJ
cord-003571-upogtny6	15	30	audiences	audience	NNS
cord-003571-upogtny6	15	31	a	a	DT
cord-003571-upogtny6	15	32	comprehensive	comprehensive	JJ
cord-003571-upogtny6	15	33	account	account	NN
cord-003571-upogtny6	15	34	of	of	IN
cord-003571-upogtny6	15	35	the	the	DT
cord-003571-upogtny6	15	36	pandemic	pandemic	NN
cord-003571-upogtny6	15	37	(	(	-LRB-
cord-003571-upogtny6	15	38	4	4	CD
cord-003571-upogtny6	15	39	)	)	-RRB-
cord-003571-upogtny6	15	40	.	.	.
cord-003571-upogtny6	16	1	Yet	yet	RB
cord-003571-upogtny6	16	2	,	,	,
cord-003571-upogtny6	16	3	many	many	JJ
cord-003571-upogtny6	16	4	important	important	JJ
cord-003571-upogtny6	16	5	questions	question	NNS
cord-003571-upogtny6	16	6	remain	remain	VBP
cord-003571-upogtny6	16	7	about	about	IN
cord-003571-upogtny6	16	8	the	the	DT
cord-003571-upogtny6	16	9	evolutionary	evolutionary	JJ
cord-003571-upogtny6	16	10	origins	origin	NNS
cord-003571-upogtny6	16	11	of	of	IN
cord-003571-upogtny6	16	12	the	the	DT
cord-003571-upogtny6	16	13	pandemic	pandemic	NN
cord-003571-upogtny6	16	14	virus	virus	NN
cord-003571-upogtny6	16	15	;	;	:
cord-003571-upogtny6	16	16	the	the	DT
cord-003571-upogtny6	16	17	contribution	contribution	NN
cord-003571-upogtny6	16	18	of	of	IN
cord-003571-upogtny6	16	19	World	World	NNP
cord-003571-upogtny6	16	20	War	War	NNP
cord-003571-upogtny6	16	21	I	I	NNP
cord-003571-upogtny6	16	22	and	and	CC
cord-003571-upogtny6	16	23	troop	troop	NN
cord-003571-upogtny6	16	24	displacements	displacement	NNS
cord-003571-upogtny6	16	25	to	to	IN
cord-003571-upogtny6	16	26	pandemic	pandemic	JJ
cord-003571-upogtny6	16	27	emergence	emergence	NN
cord-003571-upogtny6	16	28	and	and	CC
cord-003571-upogtny6	16	29	progression	progression	NN
cord-003571-upogtny6	16	30	;	;	:
cord-003571-upogtny6	16	31	the	the	DT
cord-003571-upogtny6	16	32	unique	unique	JJ
cord-003571-upogtny6	16	33	age	age	NN
cord-003571-upogtny6	16	34	profile	profile	NN
cord-003571-upogtny6	16	35	of	of	IN
cord-003571-upogtny6	16	36	pandemic	pandemic	JJ
cord-003571-upogtny6	16	37	deaths	death	NNS
cord-003571-upogtny6	16	38	,	,	,
cord-003571-upogtny6	16	39	with	with	IN
cord-003571-upogtny6	16	40	its	-PRON-	PRP$
cord-003571-upogtny6	16	41	signature	signature	NN
cord-003571-upogtny6	16	42	of	of	IN
cord-003571-upogtny6	16	43	high	high	JJ
cord-003571-upogtny6	16	44	mortality	mortality	NN
cord-003571-upogtny6	16	45	rate	rate	NN
cord-003571-upogtny6	16	46	among	among	IN
cord-003571-upogtny6	16	47	healthy	healthy	JJ
cord-003571-upogtny6	16	48	young	young	JJ
cord-003571-upogtny6	16	49	adults	adult	NNS
cord-003571-upogtny6	16	50	;	;	:
cord-003571-upogtny6	16	51	the	the	DT
cord-003571-upogtny6	16	52	consequences	consequence	NNS
cord-003571-upogtny6	16	53	of	of	IN
cord-003571-upogtny6	16	54	such	such	PDT
cord-003571-upogtny6	16	55	a	a	DT
cord-003571-upogtny6	16	56	large	large	JJ
cord-003571-upogtny6	16	57	mortality	mortality	NN
cord-003571-upogtny6	16	58	event	event	NN
cord-003571-upogtny6	16	59	on	on	IN
cord-003571-upogtny6	16	60	natality	natality	NN
cord-003571-upogtny6	16	61	;	;	:
cord-003571-upogtny6	16	62	and	and	CC
cord-003571-upogtny6	16	63	the	the	DT
cord-003571-upogtny6	16	64	heterogeneity	heterogeneity	NN
cord-003571-upogtny6	16	65	of	of	IN
cord-003571-upogtny6	16	66	the	the	DT
cord-003571-upogtny6	16	67	pandemic	pandemic	NN
cord-003571-upogtny6	16	68	experience	experience	NN
cord-003571-upogtny6	16	69	around	around	IN
cord-003571-upogtny6	16	70	the	the	DT
cord-003571-upogtny6	16	71	world	world	NN
cord-003571-upogtny6	16	72	.	.	.
cord-003571-upogtny6	17	1	Such	such	JJ
cord-003571-upogtny6	17	2	mysteries	mystery	NNS
cord-003571-upogtny6	17	3	have	have	VBP
cord-003571-upogtny6	17	4	captured	capture	VBN
cord-003571-upogtny6	17	5	the	the	DT
cord-003571-upogtny6	17	6	attention	attention	NN
cord-003571-upogtny6	17	7	of	of	IN
cord-003571-upogtny6	17	8	the	the	DT
cord-003571-upogtny6	17	9	lay	lay	NN
cord-003571-upogtny6	17	10	public	public	JJ
cord-003571-upogtny6	17	11	and	and	CC
cord-003571-upogtny6	17	12	scientific	scientific	JJ
cord-003571-upogtny6	17	13	community	community	NN
cord-003571-upogtny6	17	14	alike	alike	RB
cord-003571-upogtny6	17	15	.	.	.
cord-003571-upogtny6	18	1	In	in	IN
cord-003571-upogtny6	18	2	commemoration	commemoration	NN
cord-003571-upogtny6	18	3	of	of	IN
cord-003571-upogtny6	18	4	the	the	DT
cord-003571-upogtny6	18	5	centennial	centennial	NN
cord-003571-upogtny6	18	6	of	of	IN
cord-003571-upogtny6	18	7	the	the	DT
cord-003571-upogtny6	18	8	1918	1918	CD
cord-003571-upogtny6	18	9	pandemic	pandemic	NN
cord-003571-upogtny6	18	10	,	,	,
cord-003571-upogtny6	18	11	the	the	DT
cord-003571-upogtny6	18	12	American	American	NNP
cord-003571-upogtny6	18	13	Journal	Journal	NNP
cord-003571-upogtny6	18	14	of	of	IN
cord-003571-upogtny6	18	15	Epidemiology	Epidemiology	NNP
cord-003571-upogtny6	18	16	has	have	VBZ
cord-003571-upogtny6	18	17	convened	convene	VBN
cord-003571-upogtny6	18	18	a	a	DT
cord-003571-upogtny6	18	19	collection	collection	NN
cord-003571-upogtny6	18	20	of	of	IN
cord-003571-upogtny6	18	21	12	12	CD
cord-003571-upogtny6	18	22	articles	article	NNS
cord-003571-upogtny6	18	23	that	that	WDT
cord-003571-upogtny6	18	24	further	further	RB
cord-003571-upogtny6	18	25	illuminate	illuminate	VBP
cord-003571-upogtny6	18	26	the	the	DT
cord-003571-upogtny6	18	27	epidemiology	epidemiology	NN
cord-003571-upogtny6	18	28	of	of	IN
cord-003571-upogtny6	18	29	that	that	DT
cord-003571-upogtny6	18	30	pandemic	pandemic	NN
cord-003571-upogtny6	18	31	and	and	CC
cord-003571-upogtny6	18	32	consider	consider	VB
cord-003571-upogtny6	18	33	whether	whether	IN
cord-003571-upogtny6	18	34	we	-PRON-	PRP
cord-003571-upogtny6	18	35	would	would	MD
cord-003571-upogtny6	18	36	be	be	VB
cord-003571-upogtny6	18	37	more	more	RBR
cord-003571-upogtny6	18	38	prepared	prepared	JJ
cord-003571-upogtny6	18	39	if	if	IN
cord-003571-upogtny6	18	40	an	an	DT
cord-003571-upogtny6	18	41	equally	equally	RB
cord-003571-upogtny6	18	42	deadly	deadly	JJ
cord-003571-upogtny6	18	43	influenza	influenza	NN
cord-003571-upogtny6	18	44	virus	virus	NN
cord-003571-upogtny6	18	45	were	be	VBD
cord-003571-upogtny6	18	46	to	to	TO
cord-003571-upogtny6	18	47	emerge	emerge	VB
cord-003571-upogtny6	18	48	today	today	NN
cord-003571-upogtny6	18	49	.	.	.
cord-003571-upogtny6	19	1	Five	five	CD
cord-003571-upogtny6	19	2	of	of	IN
cord-003571-upogtny6	19	3	the	the	DT
cord-003571-upogtny6	19	4	12	12	CD
cord-003571-upogtny6	19	5	articles	article	NNS
cord-003571-upogtny6	19	6	touch	touch	NN
cord-003571-upogtny6	19	7	on	on	IN
cord-003571-upogtny6	19	8	the	the	DT
cord-003571-upogtny6	19	9	origins	origin	NNS
cord-003571-upogtny6	19	10	of	of	IN
cord-003571-upogtny6	19	11	the	the	DT
cord-003571-upogtny6	19	12	1918	1918	CD
cord-003571-upogtny6	19	13	pandemic	pandemic	NNP
cord-003571-upogtny6	19	14	virus	virus	NN
cord-003571-upogtny6	19	15	,	,	,
cord-003571-upogtny6	19	16	addressing	address	VBG
cord-003571-upogtny6	19	17	the	the	DT
cord-003571-upogtny6	19	18	role	role	NN
cord-003571-upogtny6	19	19	of	of	IN
cord-003571-upogtny6	19	20	swine	swine	NN
cord-003571-upogtny6	19	21	as	as	IN
cord-003571-upogtny6	19	22	mixing	mix	VBG
cord-003571-upogtny6	19	23	vessels	vessel	NNS
cord-003571-upogtny6	19	24	in	in	IN
cord-003571-upogtny6	19	25	this	this	DT
cord-003571-upogtny6	19	26	and	and	CC
cord-003571-upogtny6	19	27	other	other	JJ
cord-003571-upogtny6	19	28	pandemic	pandemic	NN
cord-003571-upogtny6	19	29	events	event	NNS
cord-003571-upogtny6	19	30	(	(	-LRB-
cord-003571-upogtny6	19	31	5	5	CD
cord-003571-upogtny6	19	32	)	)	-RRB-
cord-003571-upogtny6	19	33	,	,	,
cord-003571-upogtny6	19	34	the	the	DT
cord-003571-upogtny6	19	35	age	age	NN
cord-003571-upogtny6	19	36	-	-	HYPH
cord-003571-upogtny6	19	37	specific	specific	JJ
cord-003571-upogtny6	19	38	mortality	mortality	NN
cord-003571-upogtny6	19	39	patterns	pattern	NNS
cord-003571-upogtny6	19	40	of	of	IN
cord-003571-upogtny6	19	41	the	the	DT
cord-003571-upogtny6	19	42	pandemic	pandemic	NN
cord-003571-upogtny6	19	43	(	(	-LRB-
cord-003571-upogtny6	19	44	6	6	CD
cord-003571-upogtny6	19	45	)	)	-RRB-
cord-003571-upogtny6	19	46	(	(	-LRB-
cord-003571-upogtny6	19	47	7	7	LS
cord-003571-upogtny6	19	48	)	)	-RRB-
cord-003571-upogtny6	19	49	(	(	-LRB-
cord-003571-upogtny6	19	50	8)	8)	NNP
cord-003571-upogtny6	19	51	,	,	,
cord-003571-upogtny6	19	52	and	and	CC
cord-003571-upogtny6	19	53	prior	prior	JJ
cord-003571-upogtny6	19	54	population	population	NN
cord-003571-upogtny6	19	55	immunity	immunity	NN
cord-003571-upogtny6	19	56	(	(	-LRB-
cord-003571-upogtny6	19	57	9	9	CD
cord-003571-upogtny6	19	58	)	)	-RRB-
cord-003571-upogtny6	19	59	.	.	.
cord-003571-upogtny6	20	1	Others	other	NNS
cord-003571-upogtny6	20	2	include	include	VBP
cord-003571-upogtny6	20	3	reports	report	NNS
cord-003571-upogtny6	20	4	on	on	IN
cord-003571-upogtny6	20	5	geographic	geographic	JJ
cord-003571-upogtny6	20	6	and	and	CC
cord-003571-upogtny6	20	7	social	social	JJ
cord-003571-upogtny6	20	8	heterogeneities	heterogeneity	NNS
cord-003571-upogtny6	20	9	in	in	IN
cord-003571-upogtny6	20	10	the	the	DT
cord-003571-upogtny6	20	11	pandemic	pandemic	NN
cord-003571-upogtny6	20	12	experience	experience	NN
cord-003571-upogtny6	20	13	in	in	IN
cord-003571-upogtny6	20	14	which	which	WDT
cord-003571-upogtny6	20	15	the	the	DT
cord-003571-upogtny6	20	16	authors	author	NNS
cord-003571-upogtny6	20	17	describe	describe	VBP
cord-003571-upogtny6	20	18	the	the	DT
cord-003571-upogtny6	20	19	spatial	spatial	JJ
cord-003571-upogtny6	20	20	diffusion	diffusion	NN
cord-003571-upogtny6	20	21	of	of	IN
cord-003571-upogtny6	20	22	the	the	DT
cord-003571-upogtny6	20	23	pandemic	pandemic	NN
cord-003571-upogtny6	20	24	in	in	IN
cord-003571-upogtny6	20	25	India	India	NNP
cord-003571-upogtny6	20	26	and	and	CC
cord-003571-upogtny6	20	27	Portugal	Portugal	NNP
cord-003571-upogtny6	20	28	(	(	-LRB-
cord-003571-upogtny6	20	29	10	10	CD
cord-003571-upogtny6	20	30	,	,	,
cord-003571-upogtny6	20	31	11	11	CD
cord-003571-upogtny6	20	32	)	)	-RRB-
cord-003571-upogtny6	20	33	,	,	,
cord-003571-upogtny6	20	34	the	the	DT
cord-003571-upogtny6	20	35	socioeconomic	socioeconomic	JJ
cord-003571-upogtny6	20	36	predictors	predictor	NNS
cord-003571-upogtny6	20	37	of	of	IN
cord-003571-upogtny6	20	38	high	high	JJ
cord-003571-upogtny6	20	39	mortality	mortality	NN
cord-003571-upogtny6	20	40	risk	risk	NN
cord-003571-upogtny6	20	41	in	in	IN
cord-003571-upogtny6	20	42	Sweden	Sweden	NNP
cord-003571-upogtny6	20	43	and	and	CC
cord-003571-upogtny6	20	44	globally	globally	RB
cord-003571-upogtny6	20	45	(	(	-LRB-
cord-003571-upogtny6	20	46	12	12	CD
cord-003571-upogtny6	20	47	,	,	,
cord-003571-upogtny6	20	48	13	13	CD
cord-003571-upogtny6	20	49	)	)	-RRB-
cord-003571-upogtny6	20	50	,	,	,
cord-003571-upogtny6	20	51	and	and	CC
cord-003571-upogtny6	20	52	the	the	DT
cord-003571-upogtny6	20	53	consequences	consequence	NNS
cord-003571-upogtny6	20	54	of	of	IN
cord-003571-upogtny6	20	55	the	the	DT
cord-003571-upogtny6	20	56	pandemic	pandemic	NN
cord-003571-upogtny6	20	57	on	on	IN
cord-003571-upogtny6	20	58	US	US	NNP
cord-003571-upogtny6	20	59	natality	natality	NN
cord-003571-upogtny6	20	60	rates	rate	NNS
cord-003571-upogtny6	20	61	(	(	-LRB-
cord-003571-upogtny6	20	62	14	14	CD
cord-003571-upogtny6	20	63	,	,	,
cord-003571-upogtny6	20	64	15	15	CD
cord-003571-upogtny6	20	65	)	)	-RRB-
cord-003571-upogtny6	20	66	.	.	.
cord-003571-upogtny6	21	1	Finally	finally	RB
cord-003571-upogtny6	21	2	,	,	,
cord-003571-upogtny6	21	3	2	2	CD
cord-003571-upogtny6	21	4	commentaries	commentary	NNS
cord-003571-upogtny6	21	5	address	address	VBP
cord-003571-upogtny6	21	6	preparedness	preparedness	NN
cord-003571-upogtny6	21	7	for	for	IN
cord-003571-upogtny6	21	8	future	future	JJ
cord-003571-upogtny6	21	9	influenza	influenza	NN
cord-003571-upogtny6	21	10	pandemics	pandemic	NNS
cord-003571-upogtny6	21	11	(	(	-LRB-
cord-003571-upogtny6	21	12	16	16	CD
cord-003571-upogtny6	21	13	,	,	,
cord-003571-upogtny6	21	14	17	17	CD
cord-003571-upogtny6	21	15	)	)	-RRB-
cord-003571-upogtny6	21	16	.	.	.
cord-003571-upogtny6	22	1	The	the	DT
cord-003571-upogtny6	22	2	influenza	influenza	NN
cord-003571-upogtny6	22	3	virus	virus	NN
cord-003571-upogtny6	22	4	is	be	VBZ
cord-003571-upogtny6	22	5	remarkable	remarkable	JJ
cord-003571-upogtny6	22	6	for	for	IN
cord-003571-upogtny6	22	7	its	-PRON-	PRP$
cord-003571-upogtny6	22	8	ability	ability	NN
cord-003571-upogtny6	22	9	to	to	TO
cord-003571-upogtny6	22	10	infect	infect	VB
cord-003571-upogtny6	22	11	a	a	DT
cord-003571-upogtny6	22	12	variety	variety	NN
cord-003571-upogtny6	22	13	of	of	IN
cord-003571-upogtny6	22	14	animal	animal	NN
cord-003571-upogtny6	22	15	species	specie	NNS
cord-003571-upogtny6	22	16	,	,	,
cord-003571-upogtny6	22	17	from	from	IN
cord-003571-upogtny6	22	18	bats	bat	NNS
cord-003571-upogtny6	22	19	to	to	IN
cord-003571-upogtny6	22	20	birds	bird	NNS
cord-003571-upogtny6	22	21	to	to	IN
cord-003571-upogtny6	22	22	mammals	mammal	NNS
cord-003571-upogtny6	22	23	.	.	.
cord-003571-upogtny6	23	1	Although	although	IN
cord-003571-upogtny6	23	2	successful	successful	JJ
cord-003571-upogtny6	23	3	cross	cross	JJ
cord-003571-upogtny6	23	4	-	-	JJ
cord-003571-upogtny6	23	5	species	species	JJ
cord-003571-upogtny6	23	6	transmission	transmission	NN
cord-003571-upogtny6	23	7	events	event	NNS
cord-003571-upogtny6	23	8	may	may	MD
cord-003571-upogtny6	23	9	be	be	VB
cord-003571-upogtny6	23	10	rare	rare	JJ
cord-003571-upogtny6	23	11	,	,	,
cord-003571-upogtny6	23	12	they	-PRON-	PRP
cord-003571-upogtny6	23	13	play	play	VBP
cord-003571-upogtny6	23	14	a	a	DT
cord-003571-upogtny6	23	15	key	key	JJ
cord-003571-upogtny6	23	16	role	role	NN
cord-003571-upogtny6	23	17	in	in	IN
cord-003571-upogtny6	23	18	the	the	DT
cord-003571-upogtny6	23	19	genesis	genesis	NN
cord-003571-upogtny6	23	20	of	of	IN
cord-003571-upogtny6	23	21	new	new	JJ
cord-003571-upogtny6	23	22	pandemic	pandemic	NN
cord-003571-upogtny6	23	23	strains	strain	NNS
cord-003571-upogtny6	23	24	.	.	.
cord-003571-upogtny6	24	1	Nelson	Nelson	NNP
cord-003571-upogtny6	24	2	and	and	CC
cord-003571-upogtny6	24	3	Worobey	Worobey	NNP
cord-003571-upogtny6	24	4	(	(	-LRB-
cord-003571-upogtny6	24	5	5	5	CD
cord-003571-upogtny6	24	6	)	)	-RRB-
cord-003571-upogtny6	24	7	discussed	discuss	VBD
cord-003571-upogtny6	24	8	different	different	JJ
cord-003571-upogtny6	24	9	lines	line	NNS
cord-003571-upogtny6	24	10	of	of	IN
cord-003571-upogtny6	24	11	evidence	evidence	NN
cord-003571-upogtny6	24	12	informing	inform	VBG
cord-003571-upogtny6	24	13	the	the	DT
cord-003571-upogtny6	24	14	origins	origin	NNS
cord-003571-upogtny6	24	15	of	of	IN
cord-003571-upogtny6	24	16	the	the	DT
cord-003571-upogtny6	24	17	1918	1918	CD
cord-003571-upogtny6	24	18	virus	virus	NN
cord-003571-upogtny6	24	19	,	,	,
cord-003571-upogtny6	24	20	including	include	VBG
cord-003571-upogtny6	24	21	the	the	DT
cord-003571-upogtny6	24	22	genetic	genetic	JJ
cord-003571-upogtny6	24	23	make	make	NN
cord-003571-upogtny6	24	24	-	-	HYPH
cord-003571-upogtny6	24	25	up	up	NN
cord-003571-upogtny6	24	26	of	of	IN
cord-003571-upogtny6	24	27	the	the	DT
cord-003571-upogtny6	24	28	1918	1918	CD
cord-003571-upogtny6	24	29	virus	virus	NN
cord-003571-upogtny6	24	30	and	and	CC
cord-003571-upogtny6	24	31	other	other	JJ
cord-003571-upogtny6	24	32	pandemic	pandemic	NN
cord-003571-upogtny6	24	33	strains	strain	NNS
cord-003571-upogtny6	24	34	,	,	,
cord-003571-upogtny6	24	35	the	the	DT
cord-003571-upogtny6	24	36	characteristics	characteristic	NNS
cord-003571-upogtny6	24	37	of	of	IN
cord-003571-upogtny6	24	38	influenza	influenza	NN
cord-003571-upogtny6	24	39	receptors	receptor	NNS
cord-003571-upogtny6	24	40	across	across	IN
cord-003571-upogtny6	24	41	different	different	JJ
cord-003571-upogtny6	24	42	influenza	influenza	NN
cord-003571-upogtny6	24	43	hosts	host	NNS
cord-003571-upogtny6	24	44	,	,	,
cord-003571-upogtny6	24	45	and	and	CC
cord-003571-upogtny6	24	46	the	the	DT
cord-003571-upogtny6	24	47	frequency	frequency	NN
cord-003571-upogtny6	24	48	of	of	IN
cord-003571-upogtny6	24	49	cross	cross	JJ
cord-003571-upogtny6	24	50	-	-	JJ
cord-003571-upogtny6	24	51	species	species	JJ
cord-003571-upogtny6	24	52	transmission	transmission	NN
cord-003571-upogtny6	24	53	events	event	NNS
cord-003571-upogtny6	24	54	.	.	.
cord-003571-upogtny6	25	1	They	-PRON-	PRP
cord-003571-upogtny6	25	2	concluded	conclude	VBD
cord-003571-upogtny6	25	3	that	that	IN
cord-003571-upogtny6	25	4	the	the	DT
cord-003571-upogtny6	25	5	pandemic	pandemic	NN
cord-003571-upogtny6	25	6	virus	virus	NN
cord-003571-upogtny6	25	7	must	must	MD
cord-003571-upogtny6	25	8	have	have	VB
cord-003571-upogtny6	25	9	emerged	emerge	VBN
cord-003571-upogtny6	25	10	in	in	IN
cord-003571-upogtny6	25	11	mammals	mammal	NNS
cord-003571-upogtny6	25	12	just	just	RB
cord-003571-upogtny6	25	13	before	before	IN
cord-003571-upogtny6	25	14	1918	1918	CD
cord-003571-upogtny6	25	15	,	,	,
cord-003571-upogtny6	25	16	most	most	RBS
cord-003571-upogtny6	25	17	likely	likely	JJ
cord-003571-upogtny6	25	18	from	from	IN
cord-003571-upogtny6	25	19	the	the	DT
cord-003571-upogtny6	25	20	avian	avian	JJ
cord-003571-upogtny6	25	21	reservoir	reservoir	NN
cord-003571-upogtny6	25	22	,	,	,
cord-003571-upogtny6	25	23	with	with	IN
cord-003571-upogtny6	25	24	onward	onward	JJ
cord-003571-upogtny6	25	25	transmission	transmission	NN
cord-003571-upogtny6	25	26	from	from	IN
cord-003571-upogtny6	25	27	humans	human	NNS
cord-003571-upogtny6	25	28	to	to	IN
cord-003571-upogtny6	25	29	swine	swine	NN
cord-003571-upogtny6	25	30	.	.	.
cord-003571-upogtny6	26	1	More	more	RBR
cord-003571-upogtny6	26	2	broadly	broadly	RB
cord-003571-upogtny6	26	3	,	,	,
cord-003571-upogtny6	26	4	a	a	DT
cord-003571-upogtny6	26	5	re	re	NN
cord-003571-upogtny6	26	6	-	-	NN
cord-003571-upogtny6	26	7	analysis	analysis	NN
cord-003571-upogtny6	26	8	of	of	IN
cord-003571-upogtny6	26	9	virologic	virologic	NNP
cord-003571-upogtny6	26	10	data	datum	NNS
cord-003571-upogtny6	26	11	from	from	IN
cord-003571-upogtny6	26	12	the	the	DT
cord-003571-upogtny6	26	13	1957	1957	CD
cord-003571-upogtny6	26	14	and	and	CC
cord-003571-upogtny6	26	15	1968	1968	CD
cord-003571-upogtny6	26	16	pandemics	pandemic	NNS
cord-003571-upogtny6	26	17	,	,	,
cord-003571-upogtny6	26	18	together	together	RB
cord-003571-upogtny6	26	19	with	with	IN
cord-003571-upogtny6	26	20	a	a	DT
cord-003571-upogtny6	26	21	modern	modern	JJ
cord-003571-upogtny6	26	22	understanding	understanding	NN
cord-003571-upogtny6	26	23	of	of	IN
cord-003571-upogtny6	26	24	the	the	DT
cord-003571-upogtny6	26	25	swinehuman	swinehuman	NNP
cord-003571-upogtny6	26	26	interface	interface	NNP
cord-003571-upogtny6	26	27	,	,	,
cord-003571-upogtny6	26	28	suggested	suggest	VBD
cord-003571-upogtny6	26	29	a	a	DT
cord-003571-upogtny6	26	30	twist	twist	NN
cord-003571-upogtny6	26	31	on	on	IN
cord-003571-upogtny6	26	32	the	the	DT
cord-003571-upogtny6	26	33	long	long	RB
cord-003571-upogtny6	26	34	-	-	HYPH
cord-003571-upogtny6	26	35	standing	stand	VBG
cord-003571-upogtny6	26	36	concept	concept	NN
cord-003571-upogtny6	26	37	of	of	IN
cord-003571-upogtny6	26	38	swine	swine	NN
cord-003571-upogtny6	26	39	as	as	IN
cord-003571-upogtny6	26	40	a	a	DT
cord-003571-upogtny6	26	41	"	"	``
cord-003571-upogtny6	26	42	mixing	mix	VBG
cord-003571-upogtny6	26	43	vessel	vessel	NN
cord-003571-upogtny6	26	44	"	"	''
cord-003571-upogtny6	26	45	for	for	IN
cord-003571-upogtny6	26	46	influenza	influenza	NN
cord-003571-upogtny6	26	47	virus	virus	NN
cord-003571-upogtny6	26	48	.	.	.
cord-003571-upogtny6	27	1	The	the	DT
cord-003571-upogtny6	27	2	authors	author	NNS
cord-003571-upogtny6	27	3	proposed	propose	VBD
cord-003571-upogtny6	27	4	that	that	IN
cord-003571-upogtny6	27	5	swine	swine	NN
cord-003571-upogtny6	27	6	should	should	MD
cord-003571-upogtny6	27	7	be	be	VB
cord-003571-upogtny6	27	8	viewed	view	VBN
cord-003571-upogtny6	27	9	as	as	IN
cord-003571-upogtny6	27	10	a	a	DT
cord-003571-upogtny6	27	11	repository	repository	NN
cord-003571-upogtny6	27	12	of	of	IN
cord-003571-upogtny6	27	13	historic	historic	JJ
cord-003571-upogtny6	27	14	human	human	JJ
cord-003571-upogtny6	27	15	viruses	virus	NNS
cord-003571-upogtny6	27	16	rather	rather	RB
cord-003571-upogtny6	27	17	than	than	IN
cord-003571-upogtny6	27	18	a	a	DT
cord-003571-upogtny6	27	19	conduit	conduit	NN
cord-003571-upogtny6	27	20	for	for	IN
cord-003571-upogtny6	27	21	reassortment	reassortment	NN
cord-003571-upogtny6	27	22	of	of	IN
cord-003571-upogtny6	27	23	genetic	genetic	JJ
cord-003571-upogtny6	27	24	material	material	NN
cord-003571-upogtny6	27	25	between	between	IN
cord-003571-upogtny6	27	26	avian	avian	JJ
cord-003571-upogtny6	27	27	and	and	CC
cord-003571-upogtny6	27	28	human	human	JJ
cord-003571-upogtny6	27	29	viruses	virus	NNS
cord-003571-upogtny6	27	30	.	.	.
cord-003571-upogtny6	28	1	Van	Van	NNP
cord-003571-upogtny6	28	2	Wijhe	Wijhe	NNP
cord-003571-upogtny6	28	3	et	et	NNP
cord-003571-upogtny6	28	4	al	al	NNP
cord-003571-upogtny6	28	5	.	.	.
cord-003571-upogtny6	29	1	(	(	-LRB-
cord-003571-upogtny6	29	2	6	6	LS
cord-003571-upogtny6	29	3	)	)	-RRB-
cord-003571-upogtny6	29	4	returned	return	VBD
cord-003571-upogtny6	29	5	to	to	IN
cord-003571-upogtny6	29	6	the	the	DT
cord-003571-upogtny6	29	7	question	question	NN
cord-003571-upogtny6	29	8	of	of	IN
cord-003571-upogtny6	29	9	the	the	DT
cord-003571-upogtny6	29	10	origins	origin	NNS
cord-003571-upogtny6	29	11	of	of	IN
cord-003571-upogtny6	29	12	the	the	DT
cord-003571-upogtny6	29	13	1918	1918	CD
cord-003571-upogtny6	29	14	virus	virus	NN
cord-003571-upogtny6	29	15	by	by	IN
cord-003571-upogtny6	29	16	exploring	explore	VBG
cord-003571-upogtny6	29	17	the	the	DT
cord-003571-upogtny6	29	18	epidemiologic	epidemiologic	JJ
cord-003571-upogtny6	29	19	imprint	imprint	NN
cord-003571-upogtny6	29	20	of	of	IN
cord-003571-upogtny6	29	21	the	the	DT
cord-003571-upogtny6	29	22	1918	1918	CD
cord-003571-upogtny6	29	23	virus	virus	NN
cord-003571-upogtny6	29	24	on	on	IN
cord-003571-upogtny6	29	25	Danish	danish	JJ
cord-003571-upogtny6	29	26	mortality	mortality	NN
cord-003571-upogtny6	29	27	records	record	NNS
cord-003571-upogtny6	29	28	,	,	,
cord-003571-upogtny6	29	29	echoing	echo	VBG
cord-003571-upogtny6	29	30	recent	recent	JJ
cord-003571-upogtny6	29	31	work	work	NN
cord-003571-upogtny6	29	32	on	on	IN
cord-003571-upogtny6	29	33	immune	immune	JJ
cord-003571-upogtny6	29	34	imprinting	imprinting	NN
cord-003571-upogtny6	29	35	(	(	-LRB-
cord-003571-upogtny6	29	36	18	18	CD
cord-003571-upogtny6	29	37	)	)	-RRB-
cord-003571-upogtny6	29	38	(	(	-LRB-
cord-003571-upogtny6	29	39	19	19	CD
cord-003571-upogtny6	29	40	)	)	-RRB-
cord-003571-upogtny6	29	41	(	(	-LRB-
cord-003571-upogtny6	29	42	20	20	CD
cord-003571-upogtny6	29	43	)	)	-RRB-
cord-003571-upogtny6	29	44	.	.	.
cord-003571-upogtny6	30	1	They	-PRON-	PRP
cord-003571-upogtny6	30	2	identified	identify	VBD
cord-003571-upogtny6	30	3	several	several	JJ
cord-003571-upogtny6	30	4	age	age	NN
cord-003571-upogtny6	30	5	breakpoints	breakpoint	NNS
cord-003571-upogtny6	30	6	in	in	IN
cord-003571-upogtny6	30	7	pandemic	pandemic	NN
cord-003571-upogtny6	30	8	mortality	mortality	NN
cord-003571-upogtny6	30	9	that	that	WDT
cord-003571-upogtny6	30	10	were	be	VBD
cord-003571-upogtny6	30	11	suggestive	suggestive	JJ
cord-003571-upogtny6	30	12	of	of	IN
cord-003571-upogtny6	30	13	the	the	DT
cord-003571-upogtny6	30	14	cycling	cycling	NN
cord-003571-upogtny6	30	15	of	of	IN
cord-003571-upogtny6	30	16	different	different	JJ
cord-003571-upogtny6	30	17	influenza	influenza	NN
cord-003571-upogtny6	30	18	strains	strain	NNS
cord-003571-upogtny6	30	19	between	between	IN
cord-003571-upogtny6	30	20	the	the	DT
cord-003571-upogtny6	30	21	mid-19th	mid-19th	NN
cord-003571-upogtny6	30	22	century	century	NN
cord-003571-upogtny6	30	23	and	and	CC
cord-003571-upogtny6	30	24	the	the	DT
cord-003571-upogtny6	30	25	1918	1918	CD
cord-003571-upogtny6	30	26	pandemic	pandemic	NN
cord-003571-upogtny6	30	27	.	.	.
cord-003571-upogtny6	31	1	Most	most	RBS
cord-003571-upogtny6	31	2	notably	notably	RB
cord-003571-upogtny6	31	3	,	,	,
cord-003571-upogtny6	31	4	they	-PRON-	PRP
cord-003571-upogtny6	31	5	argued	argue	VBD
cord-003571-upogtny6	31	6	for	for	IN
cord-003571-upogtny6	31	7	co	co	NN
cord-003571-upogtny6	31	8	-	-	NN
cord-003571-upogtny6	31	9	circulation	circulation	NN
cord-003571-upogtny6	31	10	of	of	IN
cord-003571-upogtny6	31	11	2	2	CD
cord-003571-upogtny6	31	12	subtypes	subtype	NNS
cord-003571-upogtny6	31	13	of	of	IN
cord-003571-upogtny6	31	14	influenza	influenza	NN
cord-003571-upogtny6	31	15	virus	virus	NN
cord-003571-upogtny6	31	16	(	(	-LRB-
cord-003571-upogtny6	31	17	carrying	carry	VBG
cord-003571-upogtny6	31	18	type	type	NN
cord-003571-upogtny6	31	19	I	I	NNP
cord-003571-upogtny6	31	20	and	and	CC
cord-003571-upogtny6	31	21	II	II	NNP
cord-003571-upogtny6	31	22	hemagglutinin	hemagglutinin	NN
cord-003571-upogtny6	31	23	surface	surface	NN
cord-003571-upogtny6	31	24	antigens	antigen	NNS
cord-003571-upogtny6	31	25	)	)	-RRB-
cord-003571-upogtny6	31	26	between	between	IN
cord-003571-upogtny6	31	27	1873	1873	CD
cord-003571-upogtny6	31	28	and	and	CC
cord-003571-upogtny6	31	29	1908	1908	CD
cord-003571-upogtny6	31	30	.	.	.
cord-003571-upogtny6	32	1	As	as	IN
cord-003571-upogtny6	32	2	a	a	DT
cord-003571-upogtny6	32	3	result	result	NN
cord-003571-upogtny6	32	4	,	,	,
cord-003571-upogtny6	32	5	persons	person	NNS
cord-003571-upogtny6	32	6	born	bear	VBN
cord-003571-upogtny6	32	7	between	between	IN
cord-003571-upogtny6	32	8	1873	1873	CD
cord-003571-upogtny6	32	9	and	and	CC
cord-003571-upogtny6	32	10	1908	1908	CD
cord-003571-upogtny6	32	11	(	(	-LRB-
cord-003571-upogtny6	32	12	aged	age	VBN
cord-003571-upogtny6	32	13	10	10	CD
cord-003571-upogtny6	32	14	-	-	SYM
cord-003571-upogtny6	32	15	45	45	CD
cord-003571-upogtny6	32	16	years	year	NNS
cord-003571-upogtny6	32	17	during	during	IN
cord-003571-upogtny6	32	18	the	the	DT
cord-003571-upogtny6	32	19	1918	1918	CD
cord-003571-upogtny6	32	20	pandemic	pandemic	NN
cord-003571-upogtny6	32	21	)	)	-RRB-
cord-003571-upogtny6	32	22	may	may	MD
cord-003571-upogtny6	32	23	have	have	VB
cord-003571-upogtny6	32	24	been	be	VBN
cord-003571-upogtny6	32	25	primed	prime	VBN
cord-003571-upogtny6	32	26	by	by	IN
cord-003571-upogtny6	32	27	either	either	DT
cord-003571-upogtny6	32	28	hemagglutinin	hemagglutinin	NN
cord-003571-upogtny6	32	29	type	type	NN
cord-003571-upogtny6	32	30	,	,	,
cord-003571-upogtny6	32	31	potentially	potentially	RB
cord-003571-upogtny6	32	32	explaining	explain	VBG
cord-003571-upogtny6	32	33	the	the	DT
cord-003571-upogtny6	32	34	intriguing	intriguing	JJ
cord-003571-upogtny6	32	35	age	age	NN
cord-003571-upogtny6	32	36	profile	profile	NN
cord-003571-upogtny6	32	37	of	of	IN
cord-003571-upogtny6	32	38	pandemic	pandemic	JJ
cord-003571-upogtny6	32	39	mortality	mortality	NN
cord-003571-upogtny6	32	40	in	in	IN
cord-003571-upogtny6	32	41	adults	adult	NNS
cord-003571-upogtny6	32	42	.	.	.
cord-003571-upogtny6	33	1	Cilek	Cilek	NNP
cord-003571-upogtny6	33	2	et	et	FW
cord-003571-upogtny6	33	3	al	al	NNP
cord-003571-upogtny6	33	4	.	.	.
cord-003571-upogtny6	34	1	(	(	-LRB-
cord-003571-upogtny6	34	2	7	7	CD
cord-003571-upogtny6	34	3	)	)	-RRB-
cord-003571-upogtny6	34	4	used	use	VBD
cord-003571-upogtny6	34	5	a	a	DT
cord-003571-upogtny6	34	6	similar	similar	JJ
cord-003571-upogtny6	34	7	epidemiologic	epidemiologic	JJ
cord-003571-upogtny6	34	8	approach	approach	NN
cord-003571-upogtny6	34	9	to	to	TO
cord-003571-upogtny6	34	10	explore	explore	VB
cord-003571-upogtny6	34	11	the	the	DT
cord-003571-upogtny6	34	12	1918	1918	CD
cord-003571-upogtny6	34	13	pandemic	pandemic	NN
cord-003571-upogtny6	34	14	mortality	mortality	NN
cord-003571-upogtny6	34	15	patterns	pattern	NNS
cord-003571-upogtny6	34	16	in	in	IN
cord-003571-upogtny6	34	17	Madrid	Madrid	NNP
cord-003571-upogtny6	34	18	,	,	,
cord-003571-upogtny6	34	19	Spain	Spain	NNP
cord-003571-upogtny6	34	20	.	.	.
cord-003571-upogtny6	35	1	Madrid	Madrid	NNP
cord-003571-upogtny6	35	2	is	be	VBZ
cord-003571-upogtny6	35	3	particularly	particularly	RB
cord-003571-upogtny6	35	4	interesting	interesting	JJ
cord-003571-upogtny6	35	5	because	because	IN
cord-003571-upogtny6	35	6	a	a	DT
cord-003571-upogtny6	35	7	lethal	lethal	JJ
cord-003571-upogtny6	35	8	pandemic	pandemic	NN
cord-003571-upogtny6	35	9	wave	wave	NN
cord-003571-upogtny6	35	10	was	be	VBD
cord-003571-upogtny6	35	11	reported	report	VBN
cord-003571-upogtny6	35	12	in	in	IN
cord-003571-upogtny6	35	13	the	the	DT
cord-003571-upogtny6	35	14	city	city	NN
cord-003571-upogtny6	35	15	in	in	IN
cord-003571-upogtny6	35	16	June	June	NNP
cord-003571-upogtny6	35	17	1918	1918	CD
cord-003571-upogtny6	35	18	,	,	,
cord-003571-upogtny6	35	19	the	the	DT
cord-003571-upogtny6	35	20	earliest	early	JJS
cord-003571-upogtny6	35	21	such	such	JJ
cord-003571-upogtny6	35	22	event	event	NN
cord-003571-upogtny6	35	23	recorded	record	VBN
cord-003571-upogtny6	35	24	.	.	.
cord-003571-upogtny6	36	1	Similar	similar	JJ
cord-003571-upogtny6	36	2	to	to	IN
cord-003571-upogtny6	36	3	other	other	JJ
cord-003571-upogtny6	36	4	regions	region	NNS
cord-003571-upogtny6	36	5	of	of	IN
cord-003571-upogtny6	36	6	the	the	DT
cord-003571-upogtny6	36	7	world	world	NN
cord-003571-upogtny6	36	8	,	,	,
cord-003571-upogtny6	36	9	Madrid	Madrid	NNP
cord-003571-upogtny6	36	10	experienced	experience	VBD
cord-003571-upogtny6	36	11	a	a	DT
cord-003571-upogtny6	36	12	signature	signature	NN
cord-003571-upogtny6	36	13	pandemic	pandemic	NN
cord-003571-upogtny6	36	14	pattern	pattern	NN
cord-003571-upogtny6	36	15	of	of	IN
cord-003571-upogtny6	36	16	higher	high	JJR
cord-003571-upogtny6	36	17	mortality	mortality	NN
cord-003571-upogtny6	36	18	rates	rate	NNS
cord-003571-upogtny6	36	19	among	among	IN
cord-003571-upogtny6	36	20	young	young	JJ
cord-003571-upogtny6	36	21	adults	adult	NNS
cord-003571-upogtny6	36	22	.	.	.
cord-003571-upogtny6	37	1	However	however	RB
cord-003571-upogtny6	37	2	,	,	,
cord-003571-upogtny6	37	3	seniors	senior	NNS
cord-003571-upogtny6	37	4	in	in	IN
cord-003571-upogtny6	37	5	Madrid	Madrid	NNP
cord-003571-upogtny6	37	6	suffered	suffer	VBD
cord-003571-upogtny6	37	7	equally	equally	RB
cord-003571-upogtny6	37	8	high	high	JJ
cord-003571-upogtny6	37	9	rates	rate	NNS
cord-003571-upogtny6	37	10	of	of	IN
cord-003571-upogtny6	37	11	excess	excess	JJ
cord-003571-upogtny6	37	12	influenza	influenza	NN
cord-003571-upogtny6	37	13	mortality	mortality	NN
cord-003571-upogtny6	37	14	.	.	.
cord-003571-upogtny6	38	1	This	this	DT
cord-003571-upogtny6	38	2	is	be	VBZ
cord-003571-upogtny6	38	3	unlike	unlike	IN
cord-003571-upogtny6	38	4	the	the	DT
cord-003571-upogtny6	38	5	experience	experience	NN
cord-003571-upogtny6	38	6	of	of	IN
cord-003571-upogtny6	38	7	the	the	DT
cord-003571-upogtny6	38	8	rest	rest	NN
cord-003571-upogtny6	38	9	of	of	IN
cord-003571-upogtny6	38	10	Europe	Europe	NNP
cord-003571-upogtny6	38	11	and	and	CC
cord-003571-upogtny6	38	12	North	North	NNP
cord-003571-upogtny6	38	13	America	America	NNP
cord-003571-upogtny6	38	14	,	,	,
cord-003571-upogtny6	38	15	where	where	WRB
cord-003571-upogtny6	38	16	seniors	senior	NNS
cord-003571-upogtny6	38	17	were	be	VBD
cord-003571-upogtny6	38	18	reportedly	reportedly	RB
cord-003571-upogtny6	38	19	spared	spare	VBN
cord-003571-upogtny6	38	20	,	,	,
cord-003571-upogtny6	38	21	presumably	presumably	RB
cord-003571-upogtny6	38	22	because	because	IN
cord-003571-upogtny6	38	23	of	of	IN
cord-003571-upogtny6	38	24	antigenic	antigenic	JJ
cord-003571-upogtny6	38	25	recycling	recycling	NN
cord-003571-upogtny6	38	26	(	(	-LRB-
cord-003571-upogtny6	38	27	i.e.	i.e.	FW
cord-003571-upogtny6	38	28	,	,	,
cord-003571-upogtny6	38	29	exposure	exposure	NN
cord-003571-upogtny6	38	30	to	to	IN
cord-003571-upogtny6	38	31	a	a	DT
cord-003571-upogtny6	38	32	related	related	JJ
cord-003571-upogtny6	38	33	strain	strain	NN
cord-003571-upogtny6	38	34	in	in	IN
cord-003571-upogtny6	38	35	childhood	childhood	NN
cord-003571-upogtny6	38	36	that	that	WDT
cord-003571-upogtny6	38	37	conferred	confer	VBD
cord-003571-upogtny6	38	38	partial	partial	JJ
cord-003571-upogtny6	38	39	protection	protection	NN
cord-003571-upogtny6	38	40	)	)	-RRB-
cord-003571-upogtny6	38	41	(	(	-LRB-
cord-003571-upogtny6	38	42	20	20	CD
cord-003571-upogtny6	38	43	,	,	,
cord-003571-upogtny6	38	44	21	21	CD
cord-003571-upogtny6	38	45	)	)	-RRB-
cord-003571-upogtny6	38	46	.	.	.
cord-003571-upogtny6	39	1	This	this	DT
cord-003571-upogtny6	39	2	is	be	VBZ
cord-003571-upogtny6	39	3	an	an	DT
cord-003571-upogtny6	39	4	intriguing	intriguing	JJ
cord-003571-upogtny6	39	5	finding	finding	NN
cord-003571-upogtny6	39	6	,	,	,
cord-003571-upogtny6	39	7	and	and	CC
cord-003571-upogtny6	39	8	it	-PRON-	PRP
cord-003571-upogtny6	39	9	will	will	MD
cord-003571-upogtny6	39	10	be	be	VB
cord-003571-upogtny6	39	11	important	important	JJ
cord-003571-upogtny6	39	12	for	for	IN
cord-003571-upogtny6	39	13	future	future	JJ
cord-003571-upogtny6	39	14	work	work	NN
cord-003571-upogtny6	39	15	to	to	TO
cord-003571-upogtny6	39	16	reconcile	reconcile	VB
cord-003571-upogtny6	39	17	the	the	DT
cord-003571-upogtny6	39	18	well	well	RB
cord-003571-upogtny6	39	19	-	-	HYPH
cord-003571-upogtny6	39	20	accepted	accept	VBN
cord-003571-upogtny6	39	21	idea	idea	NN
cord-003571-upogtny6	39	22	that	that	IN
cord-003571-upogtny6	39	23	a	a	DT
cord-003571-upogtny6	39	24	1918-like	1918-like	CD
cord-003571-upogtny6	39	25	virus	virus	NN
cord-003571-upogtny6	39	26	may	may	MD
cord-003571-upogtny6	39	27	have	have	VB
cord-003571-upogtny6	39	28	circulated	circulate	VBN
cord-003571-upogtny6	39	29	in	in	IN
cord-003571-upogtny6	39	30	Europe	Europe	NNP
cord-003571-upogtny6	39	31	and	and	CC
cord-003571-upogtny6	39	32	North	North	NNP
cord-003571-upogtny6	39	33	America	America	NNP
cord-003571-upogtny6	39	34	in	in	IN
cord-003571-upogtny6	39	35	the	the	DT
cord-003571-upogtny6	39	36	second	second	JJ
cord-003571-upogtny6	39	37	half	half	NN
cord-003571-upogtny6	39	38	of	of	IN
cord-003571-upogtny6	39	39	the	the	DT
cord-003571-upogtny6	39	40	19th	19th	JJ
cord-003571-upogtny6	39	41	century	century	NN
cord-003571-upogtny6	39	42	,	,	,
cord-003571-upogtny6	39	43	with	with	IN
cord-003571-upogtny6	39	44	the	the	DT
cord-003571-upogtny6	39	45	notion	notion	NN
cord-003571-upogtny6	39	46	that	that	IN
cord-003571-upogtny6	39	47	Madrid	Madrid	NNP
cord-003571-upogtny6	39	48	would	would	MD
cord-003571-upogtny6	39	49	have	have	VB
cord-003571-upogtny6	39	50	escaped	escape	VBN
cord-003571-upogtny6	39	51	this	this	DT
cord-003571-upogtny6	39	52	virus	virus	NN
cord-003571-upogtny6	39	53	.	.	.
cord-003571-upogtny6	40	1	To	to	TO
cord-003571-upogtny6	40	2	understand	understand	VB
cord-003571-upogtny6	40	3	the	the	DT
cord-003571-upogtny6	40	4	unique	unique	JJ
cord-003571-upogtny6	40	5	epidemiology	epidemiology	NN
cord-003571-upogtny6	40	6	of	of	IN
cord-003571-upogtny6	40	7	the	the	DT
cord-003571-upogtny6	40	8	1918	1918	CD
cord-003571-upogtny6	40	9	virus	virus	NN
cord-003571-upogtny6	40	10	,	,	,
cord-003571-upogtny6	40	11	it	-PRON-	PRP
cord-003571-upogtny6	40	12	can	can	MD
cord-003571-upogtny6	40	13	be	be	VB
cord-003571-upogtny6	40	14	useful	useful	JJ
cord-003571-upogtny6	40	15	to	to	TO
cord-003571-upogtny6	40	16	document	document	VB
cord-003571-upogtny6	40	17	the	the	DT
cord-003571-upogtny6	40	18	experience	experience	NN
cord-003571-upogtny6	40	19	of	of	IN
cord-003571-upogtny6	40	20	remote	remote	JJ
cord-003571-upogtny6	40	21	populations	population	NNS
cord-003571-upogtny6	40	22	,	,	,
cord-003571-upogtny6	40	23	in	in	IN
cord-003571-upogtny6	40	24	which	which	WDT
cord-003571-upogtny6	40	25	prior	prior	JJ
cord-003571-upogtny6	40	26	immunity	immunity	NN
cord-003571-upogtny6	40	27	to	to	IN
cord-003571-upogtny6	40	28	influenza	influenza	NN
cord-003571-upogtny6	40	29	would	would	MD
cord-003571-upogtny6	40	30	be	be	VB
cord-003571-upogtny6	40	31	expected	expect	VBN
cord-003571-upogtny6	40	32	to	to	TO
cord-003571-upogtny6	40	33	be	be	VB
cord-003571-upogtny6	40	34	low	low	JJ
cord-003571-upogtny6	40	35	because	because	IN
cord-003571-upogtny6	40	36	of	of	IN
cord-003571-upogtny6	40	37	less	less	RBR
cord-003571-upogtny6	40	38	frequent	frequent	JJ
cord-003571-upogtny6	40	39	circulation	circulation	NN
cord-003571-upogtny6	40	40	of	of	IN
cord-003571-upogtny6	40	41	the	the	DT
cord-003571-upogtny6	40	42	virus	virus	NN
cord-003571-upogtny6	40	43	.	.	.
cord-003571-upogtny6	41	1	Rice	Rice	NNP
cord-003571-upogtny6	41	2	(	(	-LRB-
cord-003571-upogtny6	41	3	8)	8)	NNP
cord-003571-upogtny6	41	4	built	build	VBD
cord-003571-upogtny6	41	5	on	on	IN
cord-003571-upogtny6	41	6	a	a	DT
cord-003571-upogtny6	41	7	rich	rich	JJ
cord-003571-upogtny6	41	8	literature	literature	NN
cord-003571-upogtny6	41	9	in	in	IN
cord-003571-upogtny6	41	10	this	this	DT
cord-003571-upogtny6	41	11	area	area	NN
cord-003571-upogtny6	41	12	to	to	TO
cord-003571-upogtny6	41	13	document	document	VB
cord-003571-upogtny6	41	14	mortality	mortality	NN
cord-003571-upogtny6	41	15	patterns	pattern	NNS
cord-003571-upogtny6	41	16	in	in	IN
cord-003571-upogtny6	41	17	New	New	NNP
cord-003571-upogtny6	41	18	Zealand	Zealand	NNP
cord-003571-upogtny6	41	19	between	between	IN
cord-003571-upogtny6	41	20	1890	1890	CD
cord-003571-upogtny6	41	21	and	and	CC
cord-003571-upogtny6	41	22	1918	1918	CD
cord-003571-upogtny6	41	23	.	.	.
cord-003571-upogtny6	42	1	He	-PRON-	PRP
cord-003571-upogtny6	42	2	found	find	VBD
cord-003571-upogtny6	42	3	that	that	IN
cord-003571-upogtny6	42	4	the	the	DT
cord-003571-upogtny6	42	5	1890s	1890s	CD
cord-003571-upogtny6	42	6	were	be	VBD
cord-003571-upogtny6	42	7	a	a	DT
cord-003571-upogtny6	42	8	decade	decade	NN
cord-003571-upogtny6	42	9	associated	associate	VBN
cord-003571-upogtny6	42	10	with	with	IN
cord-003571-upogtny6	42	11	high	high	JJ
cord-003571-upogtny6	42	12	rate	rate	NN
cord-003571-upogtny6	42	13	of	of	IN
cord-003571-upogtny6	42	14	influenza	influenza	NN
cord-003571-upogtny6	42	15	mortality	mortality	NN
cord-003571-upogtny6	42	16	in	in	IN
cord-003571-upogtny6	42	17	New	New	NNP
cord-003571-upogtny6	42	18	Zealand	Zealand	NNP
cord-003571-upogtny6	42	19	,	,	,
cord-003571-upogtny6	42	20	despite	despite	IN
cord-003571-upogtny6	42	21	the	the	DT
cord-003571-upogtny6	42	22	low	low	JJ
cord-003571-upogtny6	42	23	global	global	JJ
cord-003571-upogtny6	42	24	connectivity	connectivity	NN
cord-003571-upogtny6	42	25	of	of	IN
cord-003571-upogtny6	42	26	this	this	DT
cord-003571-upogtny6	42	27	island	island	NN
cord-003571-upogtny6	42	28	in	in	IN
cord-003571-upogtny6	42	29	the	the	DT
cord-003571-upogtny6	42	30	era	era	NN
cord-003571-upogtny6	42	31	before	before	IN
cord-003571-upogtny6	42	32	air	air	NN
cord-003571-upogtny6	42	33	travel	travel	NN
cord-003571-upogtny6	42	34	.	.	.
cord-003571-upogtny6	43	1	He	-PRON-	PRP
cord-003571-upogtny6	43	2	also	also	RB
cord-003571-upogtny6	43	3	noted	note	VBD
cord-003571-upogtny6	43	4	that	that	IN
cord-003571-upogtny6	43	5	influenza	influenza	NN
cord-003571-upogtny6	43	6	mortality	mortality	NN
cord-003571-upogtny6	43	7	in	in	IN
cord-003571-upogtny6	43	8	1918	1918	CD
cord-003571-upogtny6	43	9	was	be	VBD
cord-003571-upogtny6	43	10	highest	high	JJS
cord-003571-upogtny6	43	11	among	among	IN
cord-003571-upogtny6	43	12	young	young	JJ
cord-003571-upogtny6	43	13	adults	adult	NNS
cord-003571-upogtny6	43	14	,	,	,
cord-003571-upogtny6	43	15	with	with	IN
cord-003571-upogtny6	43	16	a	a	DT
cord-003571-upogtny6	43	17	more	more	RBR
cord-003571-upogtny6	43	18	pronounced	pronounced	JJ
cord-003571-upogtny6	43	19	intensity	intensity	NN
cord-003571-upogtny6	43	20	in	in	IN
cord-003571-upogtny6	43	21	males	male	NNS
cord-003571-upogtny6	43	22	than	than	IN
cord-003571-upogtny6	43	23	in	in	IN
cord-003571-upogtny6	43	24	females	female	NNS
cord-003571-upogtny6	43	25	.	.	.
cord-003571-upogtny6	44	1	These	these	DT
cord-003571-upogtny6	44	2	patterns	pattern	NNS
cord-003571-upogtny6	44	3	are	be	VBP
cord-003571-upogtny6	44	4	broadly	broadly	RB
cord-003571-upogtny6	44	5	consistent	consistent	JJ
cord-003571-upogtny6	44	6	with	with	IN
cord-003571-upogtny6	44	7	the	the	DT
cord-003571-upogtny6	44	8	those	those	DT
cord-003571-upogtny6	44	9	among	among	IN
cord-003571-upogtny6	44	10	young	young	JJ
cord-003571-upogtny6	44	11	adults	adult	NNS
cord-003571-upogtny6	44	12	in	in	IN
cord-003571-upogtny6	44	13	Europe	Europe	NNP
cord-003571-upogtny6	44	14	and	and	CC
cord-003571-upogtny6	44	15	the	the	DT
cord-003571-upogtny6	44	16	Americas	Americas	NNPS
cord-003571-upogtny6	44	17	,	,	,
cord-003571-upogtny6	44	18	pointing	point	VBG
cord-003571-upogtny6	44	19	to	to	IN
cord-003571-upogtny6	44	20	the	the	DT
cord-003571-upogtny6	44	21	near	near	JJ
cord-003571-upogtny6	44	22	universality	universality	NN
cord-003571-upogtny6	44	23	of	of	IN
cord-003571-upogtny6	44	24	increased	increase	VBN
cord-003571-upogtny6	44	25	influenza	influenza	NN
cord-003571-upogtny6	44	26	mortality	mortality	NN
cord-003571-upogtny6	44	27	risk	risk	NN
cord-003571-upogtny6	44	28	in	in	IN
cord-003571-upogtny6	44	29	this	this	DT
cord-003571-upogtny6	44	30	age	age	NN
cord-003571-upogtny6	44	31	group	group	NN
cord-003571-upogtny6	44	32	in	in	IN
cord-003571-upogtny6	44	33	1918	1918	CD
cord-003571-upogtny6	44	34	.	.	.
cord-003571-upogtny6	45	1	Chuah	Chuah	NNP
cord-003571-upogtny6	45	2	et	et	FW
cord-003571-upogtny6	45	3	al	al	NNP
cord-003571-upogtny6	45	4	.	.	.
cord-003571-upogtny6	46	1	(	(	-LRB-
cord-003571-upogtny6	46	2	9	9	LS
cord-003571-upogtny6	46	3	)	)	-RRB-
cord-003571-upogtny6	46	4	used	use	VBN
cord-003571-upogtny6	46	5	seroepidemiology	seroepidemiology	NN
cord-003571-upogtny6	46	6	and	and	CC
cord-003571-upogtny6	46	7	structural	structural	JJ
cord-003571-upogtny6	46	8	equation	equation	NN
cord-003571-upogtny6	46	9	modeling	model	VBG
cord-003571-upogtny6	46	10	to	to	TO
cord-003571-upogtny6	46	11	answer	answer	VB
cord-003571-upogtny6	46	12	the	the	DT
cord-003571-upogtny6	46	13	inverse	inverse	JJ
cord-003571-upogtny6	46	14	question	question	NN
cord-003571-upogtny6	46	15	:	:	:
cord-003571-upogtny6	46	16	How	how	WRB
cord-003571-upogtny6	46	17	did	do	VBD
cord-003571-upogtny6	46	18	early	early	JJ
cord-003571-upogtny6	46	19	-	-	HYPH
cord-003571-upogtny6	46	20	life	life	NN
cord-003571-upogtny6	46	21	exposure	exposure	NN
cord-003571-upogtny6	46	22	to	to	IN
cord-003571-upogtny6	46	23	the	the	DT
cord-003571-upogtny6	46	24	1918	1918	CD
cord-003571-upogtny6	46	25	pandemic	pandemic	NNP
cord-003571-upogtny6	46	26	virus	virus	NN
cord-003571-upogtny6	46	27	impact	impact	NN
cord-003571-upogtny6	46	28	how	how	WRB
cord-003571-upogtny6	46	29	people	people	NNS
cord-003571-upogtny6	46	30	responded	respond	VBD
cord-003571-upogtny6	46	31	to	to	IN
cord-003571-upogtny6	46	32	the	the	DT
cord-003571-upogtny6	46	33	2009	2009	CD
cord-003571-upogtny6	46	34	pandemic	pandemic	NN
cord-003571-upogtny6	46	35	,	,	,
cord-003571-upogtny6	46	36	which	which	WDT
cord-003571-upogtny6	46	37	was	be	VBD
cord-003571-upogtny6	46	38	caused	cause	VBN
cord-003571-upogtny6	46	39	by	by	IN
cord-003571-upogtny6	46	40	an	an	DT
cord-003571-upogtny6	46	41	antigenically	antigenically	RB
cord-003571-upogtny6	46	42	similar	similar	JJ
cord-003571-upogtny6	46	43	virus	virus	NN
cord-003571-upogtny6	46	44	?	?	.
cord-003571-upogtny6	47	1	They	-PRON-	PRP
cord-003571-upogtny6	47	2	found	find	VBD
cord-003571-upogtny6	47	3	evidence	evidence	NN
cord-003571-upogtny6	47	4	for	for	IN
cord-003571-upogtny6	47	5	immunologic	immunologic	JJ
cord-003571-upogtny6	47	6	priming	priming	NN
cord-003571-upogtny6	47	7	from	from	IN
cord-003571-upogtny6	47	8	the	the	DT
cord-003571-upogtny6	47	9	1918	1918	CD
cord-003571-upogtny6	47	10	virus	virus	NN
cord-003571-upogtny6	47	11	in	in	IN
cord-003571-upogtny6	47	12	the	the	DT
cord-003571-upogtny6	47	13	oldest	old	JJS
cord-003571-upogtny6	47	14	people	people	NNS
cord-003571-upogtny6	47	15	they	-PRON-	PRP
cord-003571-upogtny6	47	16	studied	study	VBD
cord-003571-upogtny6	47	17	(	(	-LRB-
cord-003571-upogtny6	47	18	individuals	individual	NNS
cord-003571-upogtny6	47	19	80	80	CD
cord-003571-upogtny6	47	20	years	year	NNS
cord-003571-upogtny6	47	21	of	of	IN
cord-003571-upogtny6	47	22	age	age	NN
cord-003571-upogtny6	47	23	or	or	CC
cord-003571-upogtny6	47	24	older	old	JJR
cord-003571-upogtny6	47	25	)	)	-RRB-
cord-003571-upogtny6	47	26	that	that	WDT
cord-003571-upogtny6	47	27	impacted	impact	VBD
cord-003571-upogtny6	47	28	both	both	DT
cord-003571-upogtny6	47	29	baseline	baseline	JJ
cord-003571-upogtny6	47	30	titers	titer	NNS
cord-003571-upogtny6	47	31	and	and	CC
cord-003571-upogtny6	47	32	vaccine	vaccine	NN
cord-003571-upogtny6	47	33	response	response	NN
cord-003571-upogtny6	47	34	in	in	IN
cord-003571-upogtny6	47	35	2009	2009	CD
cord-003571-upogtny6	47	36	.	.	.
cord-003571-upogtny6	48	1	This	this	DT
cord-003571-upogtny6	48	2	work	work	NN
cord-003571-upogtny6	48	3	adds	add	VBZ
cord-003571-upogtny6	48	4	to	to	IN
cord-003571-upogtny6	48	5	a	a	DT
cord-003571-upogtny6	48	6	growing	grow	VBG
cord-003571-upogtny6	48	7	body	body	NN
cord-003571-upogtny6	48	8	of	of	IN
cord-003571-upogtny6	48	9	evidence	evidence	NN
cord-003571-upogtny6	48	10	that	that	IN
cord-003571-upogtny6	48	11	early	early	JJ
cord-003571-upogtny6	48	12	-	-	HYPH
cord-003571-upogtny6	48	13	life	life	NN
cord-003571-upogtny6	48	14	exposures	exposure	NNS
cord-003571-upogtny6	48	15	can	can	MD
cord-003571-upogtny6	48	16	have	have	VB
cord-003571-upogtny6	48	17	profound	profound	JJ
cord-003571-upogtny6	48	18	effects	effect	NNS
cord-003571-upogtny6	48	19	on	on	IN
cord-003571-upogtny6	48	20	immune	immune	JJ
cord-003571-upogtny6	48	21	response	response	NN
cord-003571-upogtny6	48	22	and	and	CC
cord-003571-upogtny6	48	23	mortality	mortality	NN
cord-003571-upogtny6	48	24	patterns	pattern	NNS
cord-003571-upogtny6	48	25	decades	decade	NNS
cord-003571-upogtny6	48	26	after	after	IN
cord-003571-upogtny6	48	27	they	-PRON-	PRP
cord-003571-upogtny6	48	28	occur	occur	VBP
cord-003571-upogtny6	48	29	(	(	-LRB-
cord-003571-upogtny6	48	30	18	18	CD
cord-003571-upogtny6	48	31	)	)	-RRB-
cord-003571-upogtny6	48	32	.	.	.
cord-003571-upogtny6	49	1	Information	information	NN
cord-003571-upogtny6	49	2	about	about	IN
cord-003571-upogtny6	49	3	global	global	JJ
cord-003571-upogtny6	49	4	connectivity	connectivity	NN
cord-003571-upogtny6	49	5	in	in	IN
cord-003571-upogtny6	49	6	the	the	DT
cord-003571-upogtny6	49	7	19th	19th	JJ
cord-003571-upogtny6	49	8	century	century	NN
cord-003571-upogtny6	49	9	is	be	VBZ
cord-003571-upogtny6	49	10	tenuous	tenuous	JJ
cord-003571-upogtny6	49	11	,	,	,
cord-003571-upogtny6	49	12	and	and	CC
cord-003571-upogtny6	49	13	influenza	influenza	NN
cord-003571-upogtny6	49	14	records	record	NNS
cord-003571-upogtny6	49	15	before	before	IN
cord-003571-upogtny6	49	16	1890	1890	CD
cord-003571-upogtny6	49	17	are	be	VBP
cord-003571-upogtny6	49	18	scarce	scarce	JJ
cord-003571-upogtny6	49	19	.	.	.
cord-003571-upogtny6	50	1	Epidemiologic	epidemiologic	JJ
cord-003571-upogtny6	50	2	reconstructions	reconstruction	NNS
cord-003571-upogtny6	50	3	of	of	IN
cord-003571-upogtny6	50	4	"	"	``
cord-003571-upogtny6	50	5	modern	modern	JJ
cord-003571-upogtny6	50	6	"	"	''
cord-003571-upogtny6	50	7	pandemics	pandemic	NNS
cord-003571-upogtny6	50	8	of	of	IN
cord-003571-upogtny6	50	9	the	the	DT
cord-003571-upogtny6	50	10	type	type	NN
cord-003571-upogtny6	50	11	presented	present	VBN
cord-003571-upogtny6	50	12	here	here	RB
cord-003571-upogtny6	50	13	(	(	-LRB-
cord-003571-upogtny6	50	14	6	6	CD
cord-003571-upogtny6	50	15	-	-	SYM
cord-003571-upogtny6	50	16	9	9	CD
cord-003571-upogtny6	50	17	)	)	-RRB-
cord-003571-upogtny6	50	18	provide	provide	VB
cord-003571-upogtny6	50	19	indirect	indirect	JJ
cord-003571-upogtny6	50	20	information	information	NN
cord-003571-upogtny6	50	21	on	on	IN
cord-003571-upogtny6	50	22	the	the	DT
cord-003571-upogtny6	50	23	exposures	exposure	NNS
cord-003571-upogtny6	50	24	of	of	IN
cord-003571-upogtny6	50	25	populations	population	NNS
cord-003571-upogtny6	50	26	that	that	WDT
cord-003571-upogtny6	50	27	are	be	VBP
cord-003571-upogtny6	50	28	now	now	RB
cord-003571-upogtny6	50	29	long	long	RB
cord-003571-upogtny6	50	30	gone	go	VBN
cord-003571-upogtny6	50	31	,	,	,
cord-003571-upogtny6	50	32	generating	generate	VBG
cord-003571-upogtny6	50	33	valuable	valuable	JJ
cord-003571-upogtny6	50	34	hypotheses	hypothesis	NNS
cord-003571-upogtny6	50	35	about	about	IN
cord-003571-upogtny6	50	36	influenza	influenza	NN
cord-003571-upogtny6	50	37	circulation	circulation	NN
cord-003571-upogtny6	50	38	patterns	pattern	NNS
cord-003571-upogtny6	50	39	and	and	CC
cord-003571-upogtny6	50	40	disease	disease	NN
cord-003571-upogtny6	50	41	dynamics	dynamic	NNS
cord-003571-upogtny6	50	42	well	well	RB
cord-003571-upogtny6	50	43	into	into	IN
cord-003571-upogtny6	50	44	the	the	DT
cord-003571-upogtny6	50	45	19th	19th	JJ
cord-003571-upogtny6	50	46	century	century	NN
cord-003571-upogtny6	50	47	.	.	.
cord-003571-upogtny6	51	1	Such	such	JJ
cord-003571-upogtny6	51	2	reconstructions	reconstruction	NNS
cord-003571-upogtny6	51	3	offer	offer	VBP
cord-003571-upogtny6	51	4	precious	precious	JJ
cord-003571-upogtny6	51	5	insights	insight	NNS
cord-003571-upogtny6	51	6	into	into	IN
cord-003571-upogtny6	51	7	what	what	WDT
cord-003571-upogtny6	51	8	influenza	influenza	NN
cord-003571-upogtny6	51	9	may	may	MD
cord-003571-upogtny6	51	10	have	have	VB
cord-003571-upogtny6	51	11	looked	look	VBN
cord-003571-upogtny6	51	12	like	like	IN
cord-003571-upogtny6	51	13	200	200	CD
cord-003571-upogtny6	51	14	years	year	NNS
cord-003571-upogtny6	51	15	ago	ago	RB
cord-003571-upogtny6	51	16	in	in	IN
cord-003571-upogtny6	51	17	a	a	DT
cord-003571-upogtny6	51	18	very	very	RB
cord-003571-upogtny6	51	19	different	different	JJ
cord-003571-upogtny6	51	20	world	world	NN
cord-003571-upogtny6	51	21	and	and	CC
cord-003571-upogtny6	51	22	how	how	WRB
cord-003571-upogtny6	51	23	long	long	JJ
cord-003571-upogtny6	51	24	-	-	HYPH
cord-003571-upogtny6	51	25	term	term	NN
cord-003571-upogtny6	51	26	changes	change	NNS
cord-003571-upogtny6	51	27	in	in	IN
cord-003571-upogtny6	51	28	human	human	JJ
cord-003571-upogtny6	51	29	demography	demography	NN
cord-003571-upogtny6	51	30	and	and	CC
cord-003571-upogtny6	51	31	mobility	mobility	NN
cord-003571-upogtny6	51	32	may	may	MD
cord-003571-upogtny6	51	33	affect	affect	VB
cord-003571-upogtny6	51	34	disease	disease	NN
cord-003571-upogtny6	51	35	dynamics	dynamic	NNS
cord-003571-upogtny6	51	36	(	(	-LRB-
cord-003571-upogtny6	51	37	22	22	CD
cord-003571-upogtny6	51	38	)	)	-RRB-
cord-003571-upogtny6	51	39	.	.	.
cord-003571-upogtny6	52	1	Active	active	JJ
cord-003571-upogtny6	52	2	research	research	NN
cord-003571-upogtny6	52	3	topics	topic	NNS
cord-003571-upogtny6	52	4	in	in	IN
cord-003571-upogtny6	52	5	the	the	DT
cord-003571-upogtny6	52	6	field	field	NN
cord-003571-upogtny6	52	7	of	of	IN
cord-003571-upogtny6	52	8	archeo	archeo	NN
cord-003571-upogtny6	52	9	-	-	HYPH
cord-003571-upogtny6	52	10	epidemiology	epidemiology	NN
cord-003571-upogtny6	52	11	include	include	VBP
cord-003571-upogtny6	52	12	the	the	DT
cord-003571-upogtny6	52	13	search	search	NN
cord-003571-upogtny6	52	14	for	for	IN
cord-003571-upogtny6	52	15	predictors	predictor	NNS
cord-003571-upogtny6	52	16	of	of	IN
cord-003571-upogtny6	52	17	influenza	influenza	NN
cord-003571-upogtny6	52	18	mortality	mortality	NN
cord-003571-upogtny6	52	19	,	,	,
cord-003571-upogtny6	52	20	such	such	JJ
cord-003571-upogtny6	52	21	as	as	IN
cord-003571-upogtny6	52	22	socioeconomic	socioeconomic	JJ
cord-003571-upogtny6	52	23	indicators	indicator	NNS
cord-003571-upogtny6	52	24	or	or	CC
cord-003571-upogtny6	52	25	geography	geography	NN
cord-003571-upogtny6	52	26	,	,	,
cord-003571-upogtny6	52	27	and	and	CC
cord-003571-upogtny6	52	28	the	the	DT
cord-003571-upogtny6	52	29	drivers	driver	NNS
cord-003571-upogtny6	52	30	of	of	IN
cord-003571-upogtny6	52	31	influenza	influenza	NN
cord-003571-upogtny6	52	32	spatial	spatial	JJ
cord-003571-upogtny6	52	33	diffusion	diffusion	NN
cord-003571-upogtny6	52	34	.	.	.
cord-003571-upogtny6	53	1	In	in	IN
cord-003571-upogtny6	53	2	2	2	CD
cord-003571-upogtny6	53	3	articles	article	NNS
cord-003571-upogtny6	53	4	in	in	IN
cord-003571-upogtny6	53	5	the	the	DT
cord-003571-upogtny6	53	6	present	present	JJ
cord-003571-upogtny6	53	7	issue	issue	NN
cord-003571-upogtny6	53	8	,	,	,
cord-003571-upogtny6	53	9	the	the	DT
cord-003571-upogtny6	53	10	authors	author	NNS
cord-003571-upogtny6	53	11	concentrated	concentrate	VBD
cord-003571-upogtny6	53	12	on	on	IN
cord-003571-upogtny6	53	13	the	the	DT
cord-003571-upogtny6	53	14	spatial	spatial	JJ
cord-003571-upogtny6	53	15	diffusion	diffusion	NN
cord-003571-upogtny6	53	16	of	of	IN
cord-003571-upogtny6	53	17	influenza	influenza	NN
cord-003571-upogtny6	53	18	,	,	,
cord-003571-upogtny6	53	19	focusing	focus	VBG
cord-003571-upogtny6	53	20	on	on	IN
cord-003571-upogtny6	53	21	British	british	JJ
cord-003571-upogtny6	53	22	India	India	NNP
cord-003571-upogtny6	53	23	and	and	CC
cord-003571-upogtny6	53	24	Portugal	Portugal	NNP
cord-003571-upogtny6	53	25	,	,	,
cord-003571-upogtny6	53	26	2	2	CD
cord-003571-upogtny6	53	27	countries	country	NNS
cord-003571-upogtny6	53	28	that	that	WDT
cord-003571-upogtny6	53	29	have	have	VBP
cord-003571-upogtny6	53	30	been	be	VBN
cord-003571-upogtny6	53	31	poorly	poorly	RB
cord-003571-upogtny6	53	32	studied	study	VBN
cord-003571-upogtny6	53	33	in	in	IN
cord-003571-upogtny6	53	34	the	the	DT
cord-003571-upogtny6	53	35	context	context	NN
cord-003571-upogtny6	53	36	of	of	IN
cord-003571-upogtny6	53	37	the	the	DT
cord-003571-upogtny6	53	38	1918	1918	CD
cord-003571-upogtny6	53	39	pandemic	pandemic	NN
cord-003571-upogtny6	53	40	(	(	-LRB-
cord-003571-upogtny6	53	41	10	10	CD
cord-003571-upogtny6	53	42	,	,	,
cord-003571-upogtny6	53	43	11	11	CD
cord-003571-upogtny6	53	44	)	)	-RRB-
cord-003571-upogtny6	53	45	.	.	.
cord-003571-upogtny6	54	1	Both	both	DT
cord-003571-upogtny6	54	2	studies	study	NNS
cord-003571-upogtny6	54	3	revealed	reveal	VBD
cord-003571-upogtny6	54	4	a	a	DT
cord-003571-upogtny6	54	5	highly	highly	RB
cord-003571-upogtny6	54	6	heterogeneous	heterogeneous	JJ
cord-003571-upogtny6	54	7	spread	spread	NN
cord-003571-upogtny6	54	8	of	of	IN
cord-003571-upogtny6	54	9	the	the	DT
cord-003571-upogtny6	54	10	pandemic	pandemic	NN
cord-003571-upogtny6	54	11	and	and	CC
cord-003571-upogtny6	54	12	geographic	geographic	JJ
cord-003571-upogtny6	54	13	variation	variation	NN
cord-003571-upogtny6	54	14	in	in	IN
cord-003571-upogtny6	54	15	pandemic	pandemic	NN
cord-003571-upogtny6	54	16	mortality	mortality	NN
cord-003571-upogtny6	54	17	impact	impact	NN
cord-003571-upogtny6	54	18	,	,	,
cord-003571-upogtny6	54	19	albeit	albeit	IN
cord-003571-upogtny6	54	20	at	at	IN
cord-003571-upogtny6	54	21	different	different	JJ
cord-003571-upogtny6	54	22	spatial	spatial	JJ
cord-003571-upogtny6	54	23	scales	scale	NNS
cord-003571-upogtny6	54	24	.	.	.
cord-003571-upogtny6	55	1	Although	although	IN
cord-003571-upogtny6	55	2	Portugal	Portugal	NNP
cord-003571-upogtny6	55	3	as	as	IN
cord-003571-upogtny6	55	4	a	a	DT
cord-003571-upogtny6	55	5	whole	whole	NN
cord-003571-upogtny6	55	6	was	be	VBD
cord-003571-upogtny6	55	7	severely	severely	RB
cord-003571-upogtny6	55	8	hit	hit	VBN
cord-003571-upogtny6	55	9	by	by	IN
cord-003571-upogtny6	55	10	the	the	DT
cord-003571-upogtny6	55	11	pandemic	pandemic	NN
cord-003571-upogtny6	55	12	compared	compare	VBN
cord-003571-upogtny6	55	13	with	with	IN
cord-003571-upogtny6	55	14	other	other	JJ
cord-003571-upogtny6	55	15	European	european	JJ
cord-003571-upogtny6	55	16	countries	country	NNS
cord-003571-upogtny6	55	17	,	,	,
cord-003571-upogtny6	55	18	some	some	DT
cord-003571-upogtny6	55	19	provinces	province	NNS
cord-003571-upogtny6	55	20	nearly	nearly	RB
cord-003571-upogtny6	55	21	fully	fully	RB
cord-003571-upogtny6	55	22	escaped	escape	VBD
cord-003571-upogtny6	55	23	(	(	-LRB-
cord-003571-upogtny6	55	24	10	10	CD
cord-003571-upogtny6	55	25	)	)	-RRB-
cord-003571-upogtny6	55	26	.	.	.
cord-003571-upogtny6	56	1	Analysis	analysis	NN
cord-003571-upogtny6	56	2	of	of	IN
cord-003571-upogtny6	56	3	district	district	NN
cord-003571-upogtny6	56	4	-	-	HYPH
cord-003571-upogtny6	56	5	level	level	NN
cord-003571-upogtny6	56	6	mortality	mortality	NN
cord-003571-upogtny6	56	7	records	record	NNS
cord-003571-upogtny6	56	8	in	in	IN
cord-003571-upogtny6	56	9	India	India	NNP
cord-003571-upogtny6	56	10	revealed	reveal	VBD
cord-003571-upogtny6	56	11	a	a	DT
cord-003571-upogtny6	56	12	northeastward	northeastward	JJ
cord-003571-upogtny6	56	13	wave	wave	NN
cord-003571-upogtny6	56	14	of	of	IN
cord-003571-upogtny6	56	15	infection	infection	NN
cord-003571-upogtny6	56	16	from	from	IN
cord-003571-upogtny6	56	17	September	September	NNP
cord-003571-upogtny6	56	18	to	to	IN
cord-003571-upogtny6	56	19	November	November	NNP
cord-003571-upogtny6	56	20	1918	1918	CD
cord-003571-upogtny6	56	21	that	that	WDT
cord-003571-upogtny6	56	22	was	be	VBD
cord-003571-upogtny6	56	23	associated	associate	VBN
cord-003571-upogtny6	56	24	with	with	IN
cord-003571-upogtny6	56	25	climate	climate	NN
cord-003571-upogtny6	56	26	and	and	CC
cord-003571-upogtny6	56	27	population	population	NN
cord-003571-upogtny6	56	28	density	density	NN
cord-003571-upogtny6	56	29	(	(	-LRB-
cord-003571-upogtny6	56	30	11	11	CD
cord-003571-upogtny6	56	31	)	)	-RRB-
cord-003571-upogtny6	56	32	.	.	.
cord-003571-upogtny6	57	1	Diffusion	diffusion	NN
cord-003571-upogtny6	57	2	was	be	VBD
cord-003571-upogtny6	57	3	driven	drive	VBN
cord-003571-upogtny6	57	4	by	by	IN
cord-003571-upogtny6	57	5	long	long	JJ
cord-003571-upogtny6	57	6	-	-	HYPH
cord-003571-upogtny6	57	7	distance	distance	NN
cord-003571-upogtny6	57	8	jumps	jump	VBZ
cord-003571-upogtny6	57	9	via	via	IN
cord-003571-upogtny6	57	10	the	the	DT
cord-003571-upogtny6	57	11	railroad	railroad	NN
cord-003571-upogtny6	57	12	network	network	NN
cord-003571-upogtny6	57	13	,	,	,
cord-003571-upogtny6	57	14	superimposed	superimpose	VBN
cord-003571-upogtny6	57	15	on	on	IN
cord-003571-upogtny6	57	16	local	local	JJ
cord-003571-upogtny6	57	17	diffusion	diffusion	NN
cord-003571-upogtny6	57	18	between	between	IN
cord-003571-upogtny6	57	19	neighboring	neighboring	NN
cord-003571-upogtny6	57	20	provinces	province	NNS
cord-003571-upogtny6	57	21	.	.	.
cord-003571-upogtny6	58	1	Further	further	RB
cord-003571-upogtny6	58	2	,	,	,
cord-003571-upogtny6	58	3	the	the	DT
cord-003571-upogtny6	58	4	authors	author	NNS
cord-003571-upogtny6	58	5	found	find	VBD
cord-003571-upogtny6	58	6	moderate	moderate	JJ
cord-003571-upogtny6	58	7	heterogeneity	heterogeneity	NN
cord-003571-upogtny6	58	8	in	in	IN
cord-003571-upogtny6	58	9	the	the	DT
cord-003571-upogtny6	58	10	mortality	mortality	NN
cord-003571-upogtny6	58	11	experiences	experience	NNS
cord-003571-upogtny6	58	12	of	of	IN
cord-003571-upogtny6	58	13	different	different	JJ
cord-003571-upogtny6	58	14	Indian	indian	JJ
cord-003571-upogtny6	58	15	provinces	province	NNS
cord-003571-upogtny6	58	16	.	.	.
cord-003571-upogtny6	59	1	Spreeuwenberg	Spreeuwenberg	NNP
cord-003571-upogtny6	59	2	et	et	NNP
cord-003571-upogtny6	59	3	al	al	NNP
cord-003571-upogtny6	59	4	.	.	.
cord-003571-upogtny6	60	1	(	(	-LRB-
cord-003571-upogtny6	60	2	12	12	CD
cord-003571-upogtny6	60	3	)	)	-RRB-
cord-003571-upogtny6	60	4	also	also	RB
cord-003571-upogtny6	60	5	made	make	VBD
cord-003571-upogtny6	60	6	use	use	NN
cord-003571-upogtny6	60	7	of	of	IN
cord-003571-upogtny6	60	8	recently	recently	RB
cord-003571-upogtny6	60	9	unearthed	unearth	VBN
cord-003571-upogtny6	60	10	data	datum	NNS
cord-003571-upogtny6	60	11	from	from	IN
cord-003571-upogtny6	60	12	India	India	NNP
cord-003571-upogtny6	60	13	to	to	TO
cord-003571-upogtny6	60	14	revisit	revisit	VB
cord-003571-upogtny6	60	15	the	the	DT
cord-003571-upogtny6	60	16	global	global	JJ
cord-003571-upogtny6	60	17	mortality	mortality	NN
cord-003571-upogtny6	60	18	impact	impact	NN
cord-003571-upogtny6	60	19	of	of	IN
cord-003571-upogtny6	60	20	the	the	DT
cord-003571-upogtny6	60	21	1918	1918	CD
cord-003571-upogtny6	60	22	pandemic	pandemic	NN
cord-003571-upogtny6	60	23	.	.	.
cord-003571-upogtny6	61	1	India	India	NNP
cord-003571-upogtny6	61	2	is	be	VBZ
cord-003571-upogtny6	61	3	a	a	DT
cord-003571-upogtny6	61	4	particularly	particularly	RB
cord-003571-upogtny6	61	5	important	important	JJ
cord-003571-upogtny6	61	6	country	country	NN
cord-003571-upogtny6	61	7	for	for	IN
cord-003571-upogtny6	61	8	global	global	JJ
cord-003571-upogtny6	61	9	burden	burden	NN
cord-003571-upogtny6	61	10	estimation	estimation	NN
cord-003571-upogtny6	61	11	because	because	IN
cord-003571-upogtny6	61	12	it	-PRON-	PRP
cord-003571-upogtny6	61	13	was	be	VBD
cord-003571-upogtny6	61	14	the	the	DT
cord-003571-upogtny6	61	15	one	one	NN
cord-003571-upogtny6	61	16	most	most	RBS
cord-003571-upogtny6	61	17	severely	severely	RB
cord-003571-upogtny6	61	18	hit	hit	VBN
cord-003571-upogtny6	61	19	by	by	IN
cord-003571-upogtny6	61	20	the	the	DT
cord-003571-upogtny6	61	21	1918	1918	CD
cord-003571-upogtny6	61	22	pandemic	pandemic	NN
cord-003571-upogtny6	61	23	,	,	,
cord-003571-upogtny6	61	24	with	with	IN
cord-003571-upogtny6	61	25	annual	annual	JJ
cord-003571-upogtny6	61	26	pandemic	pandemic	NN
cord-003571-upogtny6	61	27	excess	excess	JJ
cord-003571-upogtny6	61	28	mortality	mortality	NN
cord-003571-upogtny6	61	29	rates	rate	NNS
cord-003571-upogtny6	61	30	that	that	WDT
cord-003571-upogtny6	61	31	were	be	VBD
cord-003571-upogtny6	61	32	40-fold	40-fold	CD
cord-003571-upogtny6	61	33	higher	high	JJR
cord-003571-upogtny6	61	34	than	than	IN
cord-003571-upogtny6	61	35	those	those	DT
cord-003571-upogtny6	61	36	in	in	IN
cord-003571-upogtny6	61	37	Denmark	Denmark	NNP
cord-003571-upogtny6	61	38	for	for	IN
cord-003571-upogtny6	61	39	instance	instance	NN
cord-003571-upogtny6	61	40	(	(	-LRB-
cord-003571-upogtny6	61	41	23	23	CD
cord-003571-upogtny6	61	42	)	)	-RRB-
cord-003571-upogtny6	61	43	.	.	.
cord-003571-upogtny6	62	1	In	in	IN
cord-003571-upogtny6	62	2	the	the	DT
cord-003571-upogtny6	62	3	new	new	JJ
cord-003571-upogtny6	62	4	study	study	NN
cord-003571-upogtny6	62	5	,	,	,
cord-003571-upogtny6	62	6	the	the	DT
cord-003571-upogtny6	62	7	authors	author	NNS
cord-003571-upogtny6	62	8	placed	place	VBD
cord-003571-upogtny6	62	9	the	the	DT
cord-003571-upogtny6	62	10	burden	burden	NN
cord-003571-upogtny6	62	11	of	of	IN
cord-003571-upogtny6	62	12	the	the	DT
cord-003571-upogtny6	62	13	pandemic	pandemic	NN
cord-003571-upogtny6	62	14	at	at	IN
cord-003571-upogtny6	62	15	a	a	DT
cord-003571-upogtny6	62	16	much	much	RB
cord-003571-upogtny6	62	17	lower	low	JJR
cord-003571-upogtny6	62	18	number	number	NN
cord-003571-upogtny6	62	19	than	than	IN
cord-003571-upogtny6	62	20	did	do	VBD
cord-003571-upogtny6	62	21	previous	previous	JJ
cord-003571-upogtny6	62	22	work	work	NN
cord-003571-upogtny6	62	23	(	(	-LRB-
cord-003571-upogtny6	62	24	12	12	CD
cord-003571-upogtny6	62	25	)	)	-RRB-
cord-003571-upogtny6	62	26	,	,	,
cord-003571-upogtny6	62	27	in	in	IN
cord-003571-upogtny6	62	28	part	part	NN
cord-003571-upogtny6	62	29	by	by	IN
cord-003571-upogtny6	62	30	using	use	VBG
cord-003571-upogtny6	62	31	more	more	RBR
cord-003571-upogtny6	62	32	detailed	detailed	JJ
cord-003571-upogtny6	62	33	data	datum	NNS
cord-003571-upogtny6	62	34	to	to	TO
cord-003571-upogtny6	62	35	better	better	RB
cord-003571-upogtny6	62	36	adjust	adjust	VB
cord-003571-upogtny6	62	37	for	for	IN
cord-003571-upogtny6	62	38	high	high	JJ
cord-003571-upogtny6	62	39	background	background	NN
cord-003571-upogtny6	62	40	mortality	mortality	NN
cord-003571-upogtny6	62	41	unrelated	unrelated	JJ
cord-003571-upogtny6	62	42	to	to	IN
cord-003571-upogtny6	62	43	flu	flu	NN
cord-003571-upogtny6	62	44	.	.	.
cord-003571-upogtny6	63	1	The	the	DT
cord-003571-upogtny6	63	2	results	result	NNS
cord-003571-upogtny6	63	3	of	of	IN
cord-003571-upogtny6	63	4	the	the	DT
cord-003571-upogtny6	63	5	Portuguese	portuguese	JJ
cord-003571-upogtny6	63	6	study	study	NN
cord-003571-upogtny6	63	7	by	by	IN
cord-003571-upogtny6	63	8	Nunes	Nunes	NNP
cord-003571-upogtny6	63	9	et	et	NNP
cord-003571-upogtny6	63	10	al	al	NNP
cord-003571-upogtny6	63	11	.	.	.
cord-003571-upogtny6	64	1	(	(	-LRB-
cord-003571-upogtny6	64	2	10	10	CD
cord-003571-upogtny6	64	3	)	)	-RRB-
cord-003571-upogtny6	64	4	echoed	echo	VBD
cord-003571-upogtny6	64	5	these	these	DT
cord-003571-upogtny6	64	6	conclusions	conclusion	NNS
cord-003571-upogtny6	64	7	-	-	:
cord-003571-upogtny6	64	8	that	that	IN
cord-003571-upogtny6	64	9	careful	careful	JJ
cord-003571-upogtny6	64	10	analyses	analysis	NNS
cord-003571-upogtny6	64	11	of	of	IN
cord-003571-upogtny6	64	12	more	more	RBR
cord-003571-upogtny6	64	13	detailed	detailed	JJ
cord-003571-upogtny6	64	14	data	datum	NNS
cord-003571-upogtny6	64	15	tend	tend	VBP
cord-003571-upogtny6	64	16	to	to	TO
cord-003571-upogtny6	64	17	decrease	decrease	VB
cord-003571-upogtny6	64	18	estimates	estimate	NNS
cord-003571-upogtny6	64	19	of	of	IN
cord-003571-upogtny6	64	20	pandemic	pandemic	JJ
cord-003571-upogtny6	64	21	burden	burden	NN
cord-003571-upogtny6	64	22	.	.	.
cord-003571-upogtny6	65	1	The	the	DT
cord-003571-upogtny6	65	2	risk	risk	NN
cord-003571-upogtny6	65	3	factors	factor	NNS
cord-003571-upogtny6	65	4	responsible	responsible	JJ
cord-003571-upogtny6	65	5	for	for	IN
cord-003571-upogtny6	65	6	increased	increase	VBN
cord-003571-upogtny6	65	7	mortality	mortality	NN
cord-003571-upogtny6	65	8	and	and	CC
cord-003571-upogtny6	65	9	morbidity	morbidity	NN
cord-003571-upogtny6	65	10	from	from	IN
cord-003571-upogtny6	65	11	influenza	influenza	NN
cord-003571-upogtny6	65	12	remain	remain	VBP
cord-003571-upogtny6	65	13	elusive	elusive	JJ
cord-003571-upogtny6	65	14	,	,	,
cord-003571-upogtny6	65	15	whether	whether	IN
cord-003571-upogtny6	65	16	at	at	IN
cord-003571-upogtny6	65	17	the	the	DT
cord-003571-upogtny6	65	18	population	population	NN
cord-003571-upogtny6	65	19	level	level	NN
cord-003571-upogtny6	65	20	(	(	-LRB-
cord-003571-upogtny6	65	21	e.g.	e.g.	RB
cord-003571-upogtny6	65	22	,	,	,
cord-003571-upogtny6	65	23	effect	effect	NN
cord-003571-upogtny6	65	24	of	of	IN
cord-003571-upogtny6	65	25	population	population	NN
cord-003571-upogtny6	65	26	density	density	NN
cord-003571-upogtny6	65	27	or	or	CC
cord-003571-upogtny6	65	28	weather	weather	NN
cord-003571-upogtny6	65	29	on	on	IN
cord-003571-upogtny6	65	30	transmission	transmission	NN
cord-003571-upogtny6	65	31	)	)	-RRB-
cord-003571-upogtny6	65	32	or	or	CC
cord-003571-upogtny6	65	33	the	the	DT
cord-003571-upogtny6	65	34	individual	individual	JJ
cord-003571-upogtny6	65	35	level	level	NN
cord-003571-upogtny6	65	36	(	(	-LRB-
cord-003571-upogtny6	65	37	socioeconomic	socioeconomic	JJ
cord-003571-upogtny6	65	38	status	status	NN
cord-003571-upogtny6	65	39	,	,	,
cord-003571-upogtny6	65	40	comorbid	comorbid	NN
cord-003571-upogtny6	65	41	conditions	condition	NNS
cord-003571-upogtny6	65	42	,	,	,
cord-003571-upogtny6	65	43	etc	etc	FW
cord-003571-upogtny6	65	44	.	.	.
cord-003571-upogtny6	65	45	)	)	-RRB-
cord-003571-upogtny6	65	46	.	.	.
cord-003571-upogtny6	66	1	This	this	DT
cord-003571-upogtny6	66	2	is	be	VBZ
cord-003571-upogtny6	66	3	still	still	RB
cord-003571-upogtny6	66	4	an	an	DT
cord-003571-upogtny6	66	5	active	active	JJ
cord-003571-upogtny6	66	6	area	area	NN
cord-003571-upogtny6	66	7	of	of	IN
cord-003571-upogtny6	66	8	contemporary	contemporary	JJ
cord-003571-upogtny6	66	9	influenza	influenza	NN
cord-003571-upogtny6	66	10	research	research	NN
cord-003571-upogtny6	66	11	,	,	,
cord-003571-upogtny6	66	12	with	with	IN
cord-003571-upogtny6	66	13	direct	direct	JJ
cord-003571-upogtny6	66	14	applications	application	NNS
cord-003571-upogtny6	66	15	to	to	TO
cord-003571-upogtny6	66	16	design	design	VB
cord-003571-upogtny6	66	17	targeted	target	VBN
cord-003571-upogtny6	66	18	intervention	intervention	NN
cord-003571-upogtny6	66	19	strategies	strategy	NNS
cord-003571-upogtny6	66	20	.	.	.
cord-003571-upogtny6	67	1	In	in	IN
cord-003571-upogtny6	67	2	the	the	DT
cord-003571-upogtny6	67	3	present	present	JJ
cord-003571-upogtny6	67	4	issue	issue	NN
cord-003571-upogtny6	67	5	,	,	,
cord-003571-upogtny6	67	6	Bengtsson	Bengtsson	NNP
cord-003571-upogtny6	67	7	et	et	NNP
cord-003571-upogtny6	67	8	al	al	NNP
cord-003571-upogtny6	67	9	.	.	.
cord-003571-upogtny6	68	1	(	(	-LRB-
cord-003571-upogtny6	68	2	13	13	CD
cord-003571-upogtny6	68	3	)	)	-RRB-
cord-003571-upogtny6	68	4	explored	explore	VBD
cord-003571-upogtny6	68	5	the	the	DT
cord-003571-upogtny6	68	6	role	role	NN
cord-003571-upogtny6	68	7	of	of	IN
cord-003571-upogtny6	68	8	social	social	JJ
cord-003571-upogtny6	68	9	class	class	NN
cord-003571-upogtny6	68	10	on	on	IN
cord-003571-upogtny6	68	11	pandemic	pandemic	JJ
cord-003571-upogtny6	68	12	mortality	mortality	NN
cord-003571-upogtny6	68	13	by	by	IN
cord-003571-upogtny6	68	14	linking	link	VBG
cord-003571-upogtny6	68	15	individual	individual	JJ
cord-003571-upogtny6	68	16	death	death	NN
cord-003571-upogtny6	68	17	records	record	NNS
cord-003571-upogtny6	68	18	with	with	IN
cord-003571-upogtny6	68	19	historical	historical	JJ
cord-003571-upogtny6	68	20	census	census	NN
cord-003571-upogtny6	68	21	data	datum	NNS
cord-003571-upogtny6	68	22	on	on	IN
cord-003571-upogtny6	68	23	occupation	occupation	NN
cord-003571-upogtny6	68	24	in	in	IN
cord-003571-upogtny6	68	25	a	a	DT
cord-003571-upogtny6	68	26	powerful	powerful	JJ
cord-003571-upogtny6	68	27	study	study	NN
cord-003571-upogtny6	68	28	that	that	WDT
cord-003571-upogtny6	68	29	captured	capture	VBD
cord-003571-upogtny6	68	30	the	the	DT
cord-003571-upogtny6	68	31	entire	entire	JJ
cord-003571-upogtny6	68	32	Swedish	swedish	JJ
cord-003571-upogtny6	68	33	population	population	NN
cord-003571-upogtny6	68	34	.	.	.
cord-003571-upogtny6	69	1	The	the	DT
cord-003571-upogtny6	69	2	authors	author	NNS
cord-003571-upogtny6	69	3	found	find	VBD
cord-003571-upogtny6	69	4	that	that	IN
cord-003571-upogtny6	69	5	low	low	RB
cord-003571-upogtny6	69	6	-	-	HYPH
cord-003571-upogtny6	69	7	skilled	skilled	JJ
cord-003571-upogtny6	69	8	or	or	CC
cord-003571-upogtny6	69	9	unskilled	unskilled	JJ
cord-003571-upogtny6	69	10	adults	adult	NNS
cord-003571-upogtny6	69	11	had	have	VBD
cord-003571-upogtny6	69	12	higher	high	JJR
cord-003571-upogtny6	69	13	death	death	NN
cord-003571-upogtny6	69	14	rates	rate	NNS
cord-003571-upogtny6	69	15	than	than	IN
cord-003571-upogtny6	69	16	did	do	VBD
cord-003571-upogtny6	69	17	more	more	JJR
cord-003571-upogtny6	69	18	skilled	skilled	JJ
cord-003571-upogtny6	69	19	workers	worker	NNS
cord-003571-upogtny6	69	20	during	during	IN
cord-003571-upogtny6	69	21	the	the	DT
cord-003571-upogtny6	69	22	pandemic	pandemic	NN
cord-003571-upogtny6	69	23	period	period	NN
cord-003571-upogtny6	69	24	relative	relative	JJ
cord-003571-upogtny6	69	25	to	to	IN
cord-003571-upogtny6	69	26	prepandemic	prepandemic	JJ
cord-003571-upogtny6	69	27	years	year	NNS
cord-003571-upogtny6	69	28	,	,	,
cord-003571-upogtny6	69	29	whereas	whereas	IN
cord-003571-upogtny6	69	30	farmers	farmer	NNS
cord-003571-upogtny6	69	31	(	(	-LRB-
cord-003571-upogtny6	69	32	especially	especially	RB
cord-003571-upogtny6	69	33	men	man	NNS
cord-003571-upogtny6	69	34	)	)	-RRB-
cord-003571-upogtny6	69	35	fared	fare	VBD
cord-003571-upogtny6	69	36	particularly	particularly	RB
cord-003571-upogtny6	69	37	well	well	RB
cord-003571-upogtny6	69	38	.	.	.
cord-003571-upogtny6	70	1	Social	social	JJ
cord-003571-upogtny6	70	2	differences	difference	NNS
cord-003571-upogtny6	70	3	tended	tend	VBD
cord-003571-upogtny6	70	4	to	to	TO
cord-003571-upogtny6	70	5	be	be	VB
cord-003571-upogtny6	70	6	smaller	small	JJR
cord-003571-upogtny6	70	7	in	in	IN
cord-003571-upogtny6	70	8	women	woman	NNS
cord-003571-upogtny6	70	9	,	,	,
cord-003571-upogtny6	70	10	and	and	CC
cord-003571-upogtny6	70	11	there	there	EX
cord-003571-upogtny6	70	12	was	be	VBD
cord-003571-upogtny6	70	13	no	no	DT
cord-003571-upogtny6	70	14	clear	clear	JJ
cord-003571-upogtny6	70	15	gradient	gradient	NN
cord-003571-upogtny6	70	16	between	between	IN
cord-003571-upogtny6	70	17	social	social	JJ
cord-003571-upogtny6	70	18	class	class	NN
cord-003571-upogtny6	70	19	and	and	CC
cord-003571-upogtny6	70	20	mortality	mortality	NN
cord-003571-upogtny6	70	21	.	.	.
cord-003571-upogtny6	71	1	The	the	DT
cord-003571-upogtny6	71	2	authors	author	NNS
cord-003571-upogtny6	71	3	hypothesized	hypothesize	VBD
cord-003571-upogtny6	71	4	that	that	IN
cord-003571-upogtny6	71	5	these	these	DT
cord-003571-upogtny6	71	6	social	social	JJ
cord-003571-upogtny6	71	7	differences	difference	NNS
cord-003571-upogtny6	71	8	were	be	VBD
cord-003571-upogtny6	71	9	linked	link	VBN
cord-003571-upogtny6	71	10	to	to	IN
cord-003571-upogtny6	71	11	differential	differential	JJ
cord-003571-upogtny6	71	12	crowding	crowding	NN
cord-003571-upogtny6	71	13	in	in	IN
cord-003571-upogtny6	71	14	the	the	DT
cord-003571-upogtny6	71	15	workplace	workplace	NN
cord-003571-upogtny6	71	16	(	(	-LRB-
cord-003571-upogtny6	71	17	hence	hence	RB
cord-003571-upogtny6	71	18	an	an	DT
cord-003571-upogtny6	71	19	effect	effect	NN
cord-003571-upogtny6	71	20	on	on	IN
cord-003571-upogtny6	71	21	transmission	transmission	NN
cord-003571-upogtny6	71	22	)	)	-RRB-
cord-003571-upogtny6	71	23	rather	rather	RB
cord-003571-upogtny6	71	24	than	than	IN
cord-003571-upogtny6	71	25	differences	difference	NNS
cord-003571-upogtny6	71	26	in	in	IN
cord-003571-upogtny6	71	27	income	income	NN
cord-003571-upogtny6	71	28	or	or	CC
cord-003571-upogtny6	71	29	nutrition	nutrition	NN
cord-003571-upogtny6	71	30	.	.	.
cord-003571-upogtny6	72	1	This	this	DT
cord-003571-upogtny6	72	2	is	be	VBZ
cord-003571-upogtny6	72	3	a	a	DT
cord-003571-upogtny6	72	4	topical	topical	JJ
cord-003571-upogtny6	72	5	issue	issue	NN
cord-003571-upogtny6	72	6	because	because	IN
cord-003571-upogtny6	72	7	the	the	DT
cord-003571-upogtny6	72	8	effects	effect	NNS
cord-003571-upogtny6	72	9	of	of	IN
cord-003571-upogtny6	72	10	socioeconomic	socioeconomic	JJ
cord-003571-upogtny6	72	11	status	status	NN
cord-003571-upogtny6	72	12	and	and	CC
cord-003571-upogtny6	72	13	baseline	baseline	JJ
cord-003571-upogtny6	72	14	health	health	NN
cord-003571-upogtny6	72	15	on	on	IN
cord-003571-upogtny6	72	16	influenza	influenza	NN
cord-003571-upogtny6	72	17	mortality	mortality	NN
cord-003571-upogtny6	72	18	are	be	VBP
cord-003571-upogtny6	72	19	still	still	RB
cord-003571-upogtny6	72	20	debated	debate	VBN
cord-003571-upogtny6	72	21	today	today	NN
cord-003571-upogtny6	72	22	(	(	-LRB-
cord-003571-upogtny6	72	23	24	24	CD
cord-003571-upogtny6	72	24	)	)	-RRB-
cord-003571-upogtny6	72	25	.	.	.
cord-003571-upogtny6	73	1	Researchers	researcher	NNS
cord-003571-upogtny6	73	2	have	have	VBP
cord-003571-upogtny6	73	3	long	long	RB
cord-003571-upogtny6	73	4	thought	think	VBN
cord-003571-upogtny6	73	5	that	that	IN
cord-003571-upogtny6	73	6	the	the	DT
cord-003571-upogtny6	73	7	1918	1918	CD
cord-003571-upogtny6	73	8	pandemic	pandemic	NN
cord-003571-upogtny6	73	9	could	could	MD
cord-003571-upogtny6	73	10	have	have	VB
cord-003571-upogtny6	73	11	affected	affect	VBN
cord-003571-upogtny6	73	12	birth	birth	NN
cord-003571-upogtny6	73	13	rates	rate	NNS
cord-003571-upogtny6	73	14	(	(	-LRB-
cord-003571-upogtny6	73	15	25	25	CD
cord-003571-upogtny6	73	16	)	)	-RRB-
cord-003571-upogtny6	73	17	because	because	IN
cord-003571-upogtny6	73	18	of	of	IN
cord-003571-upogtny6	73	19	the	the	DT
cord-003571-upogtny6	73	20	large	large	JJ
cord-003571-upogtny6	73	21	impact	impact	NN
cord-003571-upogtny6	73	22	of	of	IN
cord-003571-upogtny6	73	23	this	this	DT
cord-003571-upogtny6	73	24	event	event	NN
cord-003571-upogtny6	73	25	on	on	IN
cord-003571-upogtny6	73	26	young	young	JJ
cord-003571-upogtny6	73	27	adult	adult	NN
cord-003571-upogtny6	73	28	mortality	mortality	NN
cord-003571-upogtny6	73	29	,	,	,
cord-003571-upogtny6	73	30	the	the	DT
cord-003571-upogtny6	73	31	increased	increase	VBN
cord-003571-upogtny6	73	32	risk	risk	NN
cord-003571-upogtny6	73	33	of	of	IN
cord-003571-upogtny6	73	34	severe	severe	JJ
cord-003571-upogtny6	73	35	flu	flu	NN
cord-003571-upogtny6	73	36	outcomes	outcome	NNS
cord-003571-upogtny6	73	37	during	during	IN
cord-003571-upogtny6	73	38	pregnancy	pregnancy	NN
cord-003571-upogtny6	73	39	,	,	,
cord-003571-upogtny6	73	40	and	and	CC
cord-003571-upogtny6	73	41	a	a	DT
cord-003571-upogtny6	73	42	possible	possible	JJ
cord-003571-upogtny6	73	43	association	association	NN
cord-003571-upogtny6	73	44	between	between	IN
cord-003571-upogtny6	73	45	influenza	influenza	NN
cord-003571-upogtny6	73	46	infection	infection	NN
cord-003571-upogtny6	73	47	and	and	CC
cord-003571-upogtny6	73	48	miscarriage	miscarriage	NN
cord-003571-upogtny6	73	49	.	.	.
cord-003571-upogtny6	74	1	Two	two	CD
cord-003571-upogtny6	74	2	papers	paper	NNS
cord-003571-upogtny6	74	3	in	in	IN
cord-003571-upogtny6	74	4	this	this	DT
cord-003571-upogtny6	74	5	issue	issue	NN
cord-003571-upogtny6	74	6	address	address	VBP
cord-003571-upogtny6	74	7	the	the	DT
cord-003571-upogtny6	74	8	topic	topic	NN
cord-003571-upogtny6	74	9	of	of	IN
cord-003571-upogtny6	74	10	natality	natality	NN
cord-003571-upogtny6	74	11	(	(	-LRB-
cord-003571-upogtny6	74	12	14	14	CD
cord-003571-upogtny6	74	13	,	,	,
cord-003571-upogtny6	74	14	15	15	CD
cord-003571-upogtny6	74	15	)	)	-RRB-
cord-003571-upogtny6	74	16	.	.	.
cord-003571-upogtny6	75	1	Key	key	JJ
cord-003571-upogtny6	75	2	questions	question	NNS
cord-003571-upogtny6	75	3	here	here	RB
cord-003571-upogtny6	75	4	include	include	VBP
cord-003571-upogtny6	75	5	the	the	DT
cord-003571-upogtny6	75	6	trimester	trimester	NN
cord-003571-upogtny6	75	7	of	of	IN
cord-003571-upogtny6	75	8	pregnancy	pregnancy	NN
cord-003571-upogtny6	75	9	during	during	IN
cord-003571-upogtny6	75	10	which	which	WDT
cord-003571-upogtny6	75	11	the	the	DT
cord-003571-upogtny6	75	12	risk	risk	NN
cord-003571-upogtny6	75	13	of	of	IN
cord-003571-upogtny6	75	14	death	death	NN
cord-003571-upogtny6	75	15	is	be	VBZ
cord-003571-upogtny6	75	16	highest	high	JJS
cord-003571-upogtny6	75	17	for	for	IN
cord-003571-upogtny6	75	18	the	the	DT
cord-003571-upogtny6	75	19	mother	mother	NN
cord-003571-upogtny6	75	20	and/or	and/or	CC
cord-003571-upogtny6	75	21	the	the	DT
cord-003571-upogtny6	75	22	unborn	unborn	JJ
cord-003571-upogtny6	75	23	child	child	NN
cord-003571-upogtny6	75	24	and	and	CC
cord-003571-upogtny6	75	25	the	the	DT
cord-003571-upogtny6	75	26	impact	impact	NN
cord-003571-upogtny6	75	27	of	of	IN
cord-003571-upogtny6	75	28	influenza	influenza	NN
cord-003571-upogtny6	75	29	on	on	IN
cord-003571-upogtny6	75	30	(	(	-LRB-
cord-003571-upogtny6	75	31	increased	increase	VBN
cord-003571-upogtny6	75	32	)	)	-RRB-
cord-003571-upogtny6	75	33	stillbirths	stillbirth	NNS
cord-003571-upogtny6	75	34	and	and	CC
cord-003571-upogtny6	75	35	(	(	-LRB-
cord-003571-upogtny6	75	36	decreased	decrease	VBD
cord-003571-upogtny6	75	37	)	)	-RRB-
cord-003571-upogtny6	75	38	live	live	JJ
cord-003571-upogtny6	75	39	births	birth	NNS
cord-003571-upogtny6	75	40	.	.	.
cord-003571-upogtny6	76	1	The	the	DT
cord-003571-upogtny6	76	2	duration	duration	NN
cord-003571-upogtny6	76	3	of	of	IN
cord-003571-upogtny6	76	4	the	the	DT
cord-003571-upogtny6	76	5	pandemic	pandemic	NN
cord-003571-upogtny6	76	6	effect	effect	NN
cord-003571-upogtny6	76	7	on	on	IN
cord-003571-upogtny6	76	8	natality	natality	NN
cord-003571-upogtny6	76	9	is	be	VBZ
cord-003571-upogtny6	76	10	also	also	RB
cord-003571-upogtny6	76	11	important	important	JJ
cord-003571-upogtny6	76	12	because	because	IN
cord-003571-upogtny6	76	13	it	-PRON-	PRP
cord-003571-upogtny6	76	14	informs	inform	VBZ
cord-003571-upogtny6	76	15	the	the	DT
cord-003571-upogtny6	76	16	biological	biological	JJ
cord-003571-upogtny6	76	17	mechanism	mechanism	NN
cord-003571-upogtny6	76	18	at	at	IN
cord-003571-upogtny6	76	19	play	play	NN
cord-003571-upogtny6	76	20	.	.	.
cord-003571-upogtny6	77	1	If	if	IN
cord-003571-upogtny6	77	2	influenza	influenza	NN
cord-003571-upogtny6	77	3	impacts	impact	VBZ
cord-003571-upogtny6	77	4	the	the	DT
cord-003571-upogtny6	77	5	probability	probability	NN
cord-003571-upogtny6	77	6	of	of	IN
cord-003571-upogtny6	77	7	conception	conception	NN
cord-003571-upogtny6	77	8	or	or	CC
cord-003571-upogtny6	77	9	fetal	fetal	JJ
cord-003571-upogtny6	77	10	deaths	death	NNS
cord-003571-upogtny6	77	11	,	,	,
cord-003571-upogtny6	77	12	one	one	PRP
cord-003571-upogtny6	77	13	would	would	MD
cord-003571-upogtny6	77	14	expect	expect	VB
cord-003571-upogtny6	77	15	a	a	DT
cord-003571-upogtny6	77	16	temporary	temporary	JJ
cord-003571-upogtny6	77	17	natality	natality	NN
cord-003571-upogtny6	77	18	drop	drop	NN
cord-003571-upogtny6	77	19	in	in	IN
cord-003571-upogtny6	77	20	the	the	DT
cord-003571-upogtny6	77	21	aftermath	aftermath	NN
cord-003571-upogtny6	77	22	of	of	IN
cord-003571-upogtny6	77	23	the	the	DT
cord-003571-upogtny6	77	24	pandemic	pandemic	NN
cord-003571-upogtny6	77	25	,	,	,
cord-003571-upogtny6	77	26	followed	follow	VBN
cord-003571-upogtny6	77	27	by	by	IN
cord-003571-upogtny6	77	28	a	a	DT
cord-003571-upogtny6	77	29	rebound	rebound	NN
cord-003571-upogtny6	77	30	in	in	IN
cord-003571-upogtny6	77	31	births	birth	NNS
cord-003571-upogtny6	77	32	a	a	DT
cord-003571-upogtny6	77	33	few	few	JJ
cord-003571-upogtny6	77	34	months	month	NNS
cord-003571-upogtny6	77	35	later	later	RB
cord-003571-upogtny6	77	36	.	.	.
cord-003571-upogtny6	78	1	In	in	IN
cord-003571-upogtny6	78	2	contrast	contrast	NN
cord-003571-upogtny6	78	3	,	,	,
cord-003571-upogtny6	78	4	a	a	DT
cord-003571-upogtny6	78	5	high	high	JJ
cord-003571-upogtny6	78	6	mortality	mortality	NN
cord-003571-upogtny6	78	7	rate	rate	NN
cord-003571-upogtny6	78	8	among	among	IN
cord-003571-upogtny6	78	9	young	young	JJ
cord-003571-upogtny6	78	10	women	woman	NNS
cord-003571-upogtny6	78	11	of	of	IN
cord-003571-upogtny6	78	12	childbearing	childbeare	VBG
cord-003571-upogtny6	78	13	age	age	NN
cord-003571-upogtny6	78	14	due	due	JJ
cord-003571-upogtny6	78	15	to	to	IN
cord-003571-upogtny6	78	16	influenza	influenza	NN
cord-003571-upogtny6	78	17	infection	infection	NN
cord-003571-upogtny6	78	18	would	would	MD
cord-003571-upogtny6	78	19	result	result	VB
cord-003571-upogtny6	78	20	in	in	IN
cord-003571-upogtny6	78	21	a	a	DT
cord-003571-upogtny6	78	22	long	long	RB
cord-003571-upogtny6	78	23	-	-	HYPH
cord-003571-upogtny6	78	24	lasting	last	VBG
cord-003571-upogtny6	78	25	natality	natality	NN
cord-003571-upogtny6	78	26	trough	trough	NN
cord-003571-upogtny6	78	27	.	.	.
cord-003571-upogtny6	79	1	Dahal	Dahal	NNP
cord-003571-upogtny6	79	2	et	et	FW
cord-003571-upogtny6	79	3	al	al	NNP
cord-003571-upogtny6	79	4	.	.	.
cord-003571-upogtny6	80	1	(	(	-LRB-
cord-003571-upogtny6	80	2	14	14	CD
cord-003571-upogtny6	80	3	)	)	-RRB-
cord-003571-upogtny6	80	4	explored	explore	VBD
cord-003571-upogtny6	80	5	these	these	DT
cord-003571-upogtny6	80	6	questions	question	NNS
cord-003571-upogtny6	80	7	using	use	VBG
cord-003571-upogtny6	80	8	individual	individual	JJ
cord-003571-upogtny6	80	9	birth	birth	NN
cord-003571-upogtny6	80	10	and	and	CC
cord-003571-upogtny6	80	11	death	death	NN
cord-003571-upogtny6	80	12	certificates	certificate	NNS
cord-003571-upogtny6	80	13	from	from	IN
cord-003571-upogtny6	80	14	Arizona	Arizona	NNP
cord-003571-upogtny6	80	15	,	,	,
cord-003571-upogtny6	80	16	where	where	WRB
cord-003571-upogtny6	80	17	there	there	EX
cord-003571-upogtny6	80	18	was	be	VBD
cord-003571-upogtny6	80	19	a	a	DT
cord-003571-upogtny6	80	20	drop	drop	NN
cord-003571-upogtny6	80	21	in	in	IN
cord-003571-upogtny6	80	22	natality	natality	NNP
cord-003571-upogtny6	80	23	9	9	CD
cord-003571-upogtny6	80	24	-	-	SYM
cord-003571-upogtny6	80	25	11	11	CD
cord-003571-upogtny6	80	26	months	month	NNS
cord-003571-upogtny6	80	27	after	after	IN
cord-003571-upogtny6	80	28	pandemic	pandemic	NN
cord-003571-upogtny6	80	29	mortality	mortality	NN
cord-003571-upogtny6	80	30	peaked	peak	VBD
cord-003571-upogtny6	80	31	.	.	.
cord-003571-upogtny6	81	1	This	this	DT
cord-003571-upogtny6	81	2	was	be	VBD
cord-003571-upogtny6	81	3	a	a	DT
cord-003571-upogtny6	81	4	temporary	temporary	JJ
cord-003571-upogtny6	81	5	depletion	depletion	NN
cord-003571-upogtny6	81	6	,	,	,
cord-003571-upogtny6	81	7	consistent	consistent	JJ
cord-003571-upogtny6	81	8	with	with	IN
cord-003571-upogtny6	81	9	a	a	DT
cord-003571-upogtny6	81	10	detrimental	detrimental	JJ
cord-003571-upogtny6	81	11	effect	effect	NN
cord-003571-upogtny6	81	12	of	of	IN
cord-003571-upogtny6	81	13	influenza	influenza	NN
cord-003571-upogtny6	81	14	early	early	RB
cord-003571-upogtny6	81	15	in	in	IN
cord-003571-upogtny6	81	16	pregnancy	pregnancy	NN
cord-003571-upogtny6	81	17	.	.	.
cord-003571-upogtny6	82	1	In	in	IN
cord-003571-upogtny6	82	2	a	a	DT
cord-003571-upogtny6	82	3	larger	large	JJR
cord-003571-upogtny6	82	4	study	study	NN
cord-003571-upogtny6	82	5	of	of	IN
cord-003571-upogtny6	82	6	populationlevel	populationlevel	NNP
cord-003571-upogtny6	82	7	vital	vital	JJ
cord-003571-upogtny6	82	8	statistics	statistic	NNS
cord-003571-upogtny6	82	9	in	in	IN
cord-003571-upogtny6	82	10	US	US	NNP
cord-003571-upogtny6	82	11	states	state	NNS
cord-003571-upogtny6	82	12	,	,	,
cord-003571-upogtny6	82	13	Chandra	Chandra	NNP
cord-003571-upogtny6	82	14	et	et	NNP
cord-003571-upogtny6	82	15	al	al	NNP
cord-003571-upogtny6	82	16	.	.	.
cord-003571-upogtny6	83	1	(	(	-LRB-
cord-003571-upogtny6	83	2	15	15	CD
cord-003571-upogtny6	83	3	)	)	-RRB-
cord-003571-upogtny6	83	4	found	find	VBD
cord-003571-upogtny6	83	5	a	a	DT
cord-003571-upogtny6	83	6	10	10	CD
cord-003571-upogtny6	83	7	%	%	NN
cord-003571-upogtny6	83	8	drop	drop	NN
cord-003571-upogtny6	83	9	9	9	CD
cord-003571-upogtny6	83	10	-	-	SYM
cord-003571-upogtny6	83	11	10	10	CD
cord-003571-upogtny6	83	12	months	month	NNS
cord-003571-upogtny6	83	13	after	after	IN
cord-003571-upogtny6	83	14	peak	peak	NN
cord-003571-upogtny6	83	15	influenza	influenza	NN
cord-003571-upogtny6	83	16	mortality	mortality	NN
cord-003571-upogtny6	83	17	,	,	,
cord-003571-upogtny6	83	18	which	which	WDT
cord-003571-upogtny6	83	19	they	-PRON-	PRP
cord-003571-upogtny6	83	20	ascribe	ascribe	VBP
cord-003571-upogtny6	83	21	to	to	IN
cord-003571-upogtny6	83	22	a	a	DT
cord-003571-upogtny6	83	23	drop	drop	NN
cord-003571-upogtny6	83	24	in	in	IN
cord-003571-upogtny6	83	25	conception	conception	NN
cord-003571-upogtny6	83	26	during	during	IN
cord-003571-upogtny6	83	27	the	the	DT
cord-003571-upogtny6	83	28	period	period	NN
cord-003571-upogtny6	83	29	of	of	IN
cord-003571-upogtny6	83	30	intense	intense	JJ
cord-003571-upogtny6	83	31	pandemic	pandemic	NN
cord-003571-upogtny6	83	32	activity	activity	NN
cord-003571-upogtny6	83	33	.	.	.
cord-003571-upogtny6	84	1	They	-PRON-	PRP
cord-003571-upogtny6	84	2	also	also	RB
cord-003571-upogtny6	84	3	found	find	VBD
cord-003571-upogtny6	84	4	a	a	DT
cord-003571-upogtny6	84	5	natality	natality	NN
cord-003571-upogtny6	84	6	drop	drop	NN
cord-003571-upogtny6	84	7	in	in	IN
cord-003571-upogtny6	84	8	the	the	DT
cord-003571-upogtny6	84	9	3	3	CD
cord-003571-upogtny6	84	10	months	month	NNS
cord-003571-upogtny6	84	11	after	after	IN
cord-003571-upogtny6	84	12	peak	peak	NN
cord-003571-upogtny6	84	13	mortality	mortality	NN
cord-003571-upogtny6	84	14	,	,	,
cord-003571-upogtny6	84	15	which	which	WDT
cord-003571-upogtny6	84	16	they	-PRON-	PRP
cord-003571-upogtny6	84	17	linked	link	VBD
cord-003571-upogtny6	84	18	to	to	IN
cord-003571-upogtny6	84	19	excess	excess	JJ
cord-003571-upogtny6	84	20	preterm	preterm	JJ
cord-003571-upogtny6	84	21	births	birth	NNS
cord-003571-upogtny6	84	22	and	and	CC
cord-003571-upogtny6	84	23	stillbirths	stillbirth	NNS
cord-003571-upogtny6	84	24	due	due	JJ
cord-003571-upogtny6	84	25	to	to	IN
cord-003571-upogtny6	84	26	influenza	influenza	NN
cord-003571-upogtny6	84	27	infections	infection	NNS
cord-003571-upogtny6	84	28	in	in	IN
cord-003571-upogtny6	84	29	the	the	DT
cord-003571-upogtny6	84	30	last	last	JJ
cord-003571-upogtny6	84	31	trimester	trimester	NN
cord-003571-upogtny6	84	32	.	.	.
cord-003571-upogtny6	85	1	Interestingly	interestingly	RB
cord-003571-upogtny6	85	2	,	,	,
cord-003571-upogtny6	85	3	these	these	DT
cord-003571-upogtny6	85	4	patterns	pattern	NNS
cord-003571-upogtny6	85	5	were	be	VBD
cord-003571-upogtny6	85	6	also	also	RB
cord-003571-upogtny6	85	7	found	find	VBN
cord-003571-upogtny6	85	8	in	in	IN
cord-003571-upogtny6	85	9	the	the	DT
cord-003571-upogtny6	85	10	aftermath	aftermath	NN
cord-003571-upogtny6	85	11	of	of	IN
cord-003571-upogtny6	85	12	the	the	DT
cord-003571-upogtny6	85	13	1920	1920	CD
cord-003571-upogtny6	85	14	influenza	influenza	NN
cord-003571-upogtny6	85	15	pandemic	pandemic	NN
cord-003571-upogtny6	85	16	wave	wave	NN
cord-003571-upogtny6	85	17	,	,	,
cord-003571-upogtny6	85	18	albeit	albeit	IN
cord-003571-upogtny6	85	19	with	with	IN
cord-003571-upogtny6	85	20	a	a	DT
cord-003571-upogtny6	85	21	less	less	RBR
cord-003571-upogtny6	85	22	pronounced	pronounced	JJ
cord-003571-upogtny6	85	23	effect	effect	NN
cord-003571-upogtny6	85	24	.	.	.
cord-003571-upogtny6	86	1	One	one	CD
cord-003571-upogtny6	86	2	reason	reason	NN
cord-003571-upogtny6	86	3	we	-PRON-	PRP
cord-003571-upogtny6	86	4	still	still	RB
cord-003571-upogtny6	86	5	look	look	VBP
cord-003571-upogtny6	86	6	back	back	RB
cord-003571-upogtny6	86	7	at	at	IN
cord-003571-upogtny6	86	8	the	the	DT
cord-003571-upogtny6	86	9	1918	1918	CD
cord-003571-upogtny6	86	10	pandemic	pandemic	NN
cord-003571-upogtny6	86	11	100	100	CD
cord-003571-upogtny6	86	12	years	year	NNS
cord-003571-upogtny6	86	13	later	later	RB
cord-003571-upogtny6	86	14	is	be	VBZ
cord-003571-upogtny6	86	15	because	because	IN
cord-003571-upogtny6	86	16	doing	do	VBG
cord-003571-upogtny6	86	17	so	so	RB
cord-003571-upogtny6	86	18	will	will	MD
cord-003571-upogtny6	86	19	make	make	VB
cord-003571-upogtny6	86	20	us	-PRON-	PRP
cord-003571-upogtny6	86	21	better	well	RBR
cord-003571-upogtny6	86	22	able	able	JJ
cord-003571-upogtny6	86	23	to	to	TO
cord-003571-upogtny6	86	24	prepare	prepare	VB
cord-003571-upogtny6	86	25	for	for	IN
cord-003571-upogtny6	86	26	the	the	DT
cord-003571-upogtny6	86	27	future	future	NN
cord-003571-upogtny6	86	28	.	.	.
cord-003571-upogtny6	87	1	The	the	DT
cord-003571-upogtny6	87	2	last	last	JJ
cord-003571-upogtny6	87	3	2	2	CD
cord-003571-upogtny6	87	4	articles	article	NNS
cord-003571-upogtny6	87	5	of	of	IN
cord-003571-upogtny6	87	6	this	this	DT
cord-003571-upogtny6	87	7	collection	collection	NN
cord-003571-upogtny6	87	8	are	be	VBP
cord-003571-upogtny6	87	9	focused	focus	VBN
cord-003571-upogtny6	87	10	on	on	IN
cord-003571-upogtny6	87	11	preparedness	preparedness	NN
cord-003571-upogtny6	87	12	for	for	IN
cord-003571-upogtny6	87	13	future	future	JJ
cord-003571-upogtny6	87	14	pandemic	pandemic	NN
cord-003571-upogtny6	87	15	threats	threat	NNS
cord-003571-upogtny6	87	16	(	(	-LRB-
cord-003571-upogtny6	87	17	16	16	CD
cord-003571-upogtny6	87	18	,	,	,
cord-003571-upogtny6	87	19	17	17	CD
cord-003571-upogtny6	87	20	)	)	-RRB-
cord-003571-upogtny6	87	21	,	,	,
cord-003571-upogtny6	87	22	building	build	VBG
cord-003571-upogtny6	87	23	on	on	IN
cord-003571-upogtny6	87	24	the	the	DT
cord-003571-upogtny6	87	25	lessons	lesson	NNS
cord-003571-upogtny6	87	26	learned	learn	VBN
cord-003571-upogtny6	87	27	in	in	IN
cord-003571-upogtny6	87	28	1918	1918	CD
cord-003571-upogtny6	87	29	and	and	CC
cord-003571-upogtny6	87	30	later	later	JJ
cord-003571-upogtny6	87	31	pandemics	pandemic	NNS
cord-003571-upogtny6	87	32	,	,	,
cord-003571-upogtny6	87	33	and	and	CC
cord-003571-upogtny6	87	34	on	on	IN
cord-003571-upogtny6	87	35	new	new	JJ
cord-003571-upogtny6	87	36	tools	tool	NNS
cord-003571-upogtny6	87	37	to	to	TO
cord-003571-upogtny6	87	38	protect	protect	VB
cord-003571-upogtny6	87	39	populations	population	NNS
cord-003571-upogtny6	87	40	,	,	,
cord-003571-upogtny6	87	41	including	include	VBG
cord-003571-upogtny6	87	42	the	the	DT
cord-003571-upogtny6	87	43	very	very	RB
cord-003571-upogtny6	87	44	active	active	JJ
cord-003571-upogtny6	87	45	(	(	-LRB-
cord-003571-upogtny6	87	46	but	but	CC
cord-003571-upogtny6	87	47	still	still	RB
cord-003571-upogtny6	87	48	elusive	elusive	JJ
cord-003571-upogtny6	87	49	)	)	-RRB-
cord-003571-upogtny6	87	50	topic	topic	NN
cord-003571-upogtny6	87	51	of	of	IN
cord-003571-upogtny6	87	52	universal	universal	JJ
cord-003571-upogtny6	87	53	influenza	influenza	NN
cord-003571-upogtny6	87	54	vaccines	vaccine	NNS
cord-003571-upogtny6	87	55	.	.	.
cord-003571-upogtny6	88	1	Jester	Jester	NNP
cord-003571-upogtny6	88	2	et	et	NNP
cord-003571-upogtny6	88	3	al	al	NNP
cord-003571-upogtny6	88	4	.	.	NNP
cord-003571-upogtny6	88	5	painted	paint	VBD
cord-003571-upogtny6	88	6	an	an	DT
cord-003571-upogtny6	88	7	optimistic	optimistic	JJ
cord-003571-upogtny6	88	8	picture	picture	NN
cord-003571-upogtny6	88	9	of	of	IN
cord-003571-upogtny6	88	10	progress	progress	NN
cord-003571-upogtny6	88	11	made	make	VBN
cord-003571-upogtny6	88	12	in	in	IN
cord-003571-upogtny6	88	13	influenza	influenza	NN
cord-003571-upogtny6	88	14	surveillance	surveillance	NN
cord-003571-upogtny6	88	15	domestically	domestically	RB
cord-003571-upogtny6	88	16	and	and	CC
cord-003571-upogtny6	88	17	internationally	internationally	RB
cord-003571-upogtny6	88	18	,	,	,
cord-003571-upogtny6	88	19	antiviral	antiviral	JJ
cord-003571-upogtny6	88	20	treatments	treatment	NNS
cord-003571-upogtny6	88	21	,	,	,
cord-003571-upogtny6	88	22	and	and	CC
cord-003571-upogtny6	88	23	robustness	robustness	NN
cord-003571-upogtny6	88	24	in	in	IN
cord-003571-upogtny6	88	25	the	the	DT
cord-003571-upogtny6	88	26	infrastructure	infrastructure	NN
cord-003571-upogtny6	88	27	for	for	IN
cord-003571-upogtny6	88	28	vaccine	vaccine	NN
cord-003571-upogtny6	88	29	production	production	NN
cord-003571-upogtny6	88	30	(	(	-LRB-
cord-003571-upogtny6	88	31	16	16	CD
cord-003571-upogtny6	88	32	)	)	-RRB-
cord-003571-upogtny6	88	33	.	.	.
cord-003571-upogtny6	89	1	Epstein	Epstein	NNP
cord-003571-upogtny6	89	2	reviewed	review	VBD
cord-003571-upogtny6	89	3	the	the	DT
cord-003571-upogtny6	89	4	progress	progress	NN
cord-003571-upogtny6	89	5	of	of	IN
cord-003571-upogtny6	89	6	the	the	DT
cord-003571-upogtny6	89	7	development	development	NN
cord-003571-upogtny6	89	8	of	of	IN
cord-003571-upogtny6	89	9	a	a	DT
cord-003571-upogtny6	89	10	broadly	broadly	RB
cord-003571-upogtny6	89	11	cross	cross	JJ
cord-003571-upogtny6	89	12	-	-	JJ
cord-003571-upogtny6	89	13	protective	protective	JJ
cord-003571-upogtny6	89	14	flu	flu	NN
cord-003571-upogtny6	89	15	vaccine	vaccine	NN
cord-003571-upogtny6	89	16	,	,	,
cord-003571-upogtny6	89	17	focused	focus	VBD
cord-003571-upogtny6	89	18	on	on	IN
cord-003571-upogtny6	89	19	conserved	conserved	JJ
cord-003571-upogtny6	89	20	parts	part	NNS
cord-003571-upogtny6	89	21	of	of	IN
cord-003571-upogtny6	89	22	the	the	DT
cord-003571-upogtny6	89	23	influenza	influenza	NN
cord-003571-upogtny6	89	24	virus	virus	NN
cord-003571-upogtny6	89	25	,	,	,
cord-003571-upogtny6	89	26	such	such	JJ
cord-003571-upogtny6	89	27	as	as	IN
cord-003571-upogtny6	89	28	the	the	DT
cord-003571-upogtny6	89	29	matrix	matrix	NN
cord-003571-upogtny6	89	30	protein	protein	NN
cord-003571-upogtny6	89	31	,	,	,
cord-003571-upogtny6	89	32	nucleoprotein	nucleoprotein	NNP
cord-003571-upogtny6	89	33	,	,	,
cord-003571-upogtny6	89	34	the	the	DT
cord-003571-upogtny6	89	35	hemagglutinin	hemagglutinin	NN
cord-003571-upogtny6	89	36	stem	stem	NN
cord-003571-upogtny6	89	37	,	,	,
cord-003571-upogtny6	89	38	and	and	CC
cord-003571-upogtny6	89	39	various	various	JJ
cord-003571-upogtny6	89	40	cocktail	cocktail	NN
cord-003571-upogtny6	89	41	combinations	combination	NNS
cord-003571-upogtny6	89	42	(	(	-LRB-
cord-003571-upogtny6	89	43	17	17	CD
cord-003571-upogtny6	89	44	)	)	-RRB-
cord-003571-upogtny6	89	45	.	.	.
cord-003571-upogtny6	90	1	These	these	DT
cord-003571-upogtny6	90	2	vaccines	vaccine	NNS
cord-003571-upogtny6	90	3	offer	offer	VBP
cord-003571-upogtny6	90	4	promising	promise	VBG
cord-003571-upogtny6	90	5	broad	broad	JJ
cord-003571-upogtny6	90	6	protective	protective	JJ
cord-003571-upogtny6	90	7	effects	effect	NNS
cord-003571-upogtny6	90	8	against	against	IN
cord-003571-upogtny6	90	9	new	new	JJ
cord-003571-upogtny6	90	10	influenza	influenza	NN
cord-003571-upogtny6	90	11	antigenic	antigenic	JJ
cord-003571-upogtny6	90	12	variants	variant	NNS
cord-003571-upogtny6	90	13	and	and	CC
cord-003571-upogtny6	90	14	could	could	MD
cord-003571-upogtny6	90	15	potentially	potentially	RB
cord-003571-upogtny6	90	16	be	be	VB
cord-003571-upogtny6	90	17	used	use	VBN
cord-003571-upogtny6	90	18	in	in	IN
cord-003571-upogtny6	90	19	pandemic	pandemic	JJ
cord-003571-upogtny6	90	20	situations	situation	NNS
cord-003571-upogtny6	90	21	.	.	.
cord-003571-upogtny6	91	1	However	however	RB
cord-003571-upogtny6	91	2	,	,	,
cord-003571-upogtny6	91	3	some	some	DT
cord-003571-upogtny6	91	4	of	of	IN
cord-003571-upogtny6	91	5	the	the	DT
cord-003571-upogtny6	91	6	candidate	candidate	NN
cord-003571-upogtny6	91	7	vaccine	vaccine	NN
cord-003571-upogtny6	91	8	formulations	formulation	NNS
cord-003571-upogtny6	91	9	permit	permit	VBP
cord-003571-upogtny6	91	10	limited	limit	VBN
cord-003571-upogtny6	91	11	viral	viral	JJ
cord-003571-upogtny6	91	12	replication	replication	NN
cord-003571-upogtny6	91	13	and	and	CC
cord-003571-upogtny6	91	14	may	may	MD
cord-003571-upogtny6	91	15	foster	foster	VB
cord-003571-upogtny6	91	16	the	the	DT
cord-003571-upogtny6	91	17	emergence	emergence	NN
cord-003571-upogtny6	91	18	of	of	IN
cord-003571-upogtny6	91	19	escape	escape	NN
cord-003571-upogtny6	91	20	mutants	mutant	NNS
cord-003571-upogtny6	91	21	fit	fit	VBP
cord-003571-upogtny6	91	22	enough	enough	RB
cord-003571-upogtny6	91	23	to	to	TO
cord-003571-upogtny6	91	24	cause	cause	VB
cord-003571-upogtny6	91	25	disease	disease	NN
cord-003571-upogtny6	91	26	.	.	.
cord-003571-upogtny6	92	1	These	these	DT
cord-003571-upogtny6	92	2	features	feature	NNS
cord-003571-upogtny6	92	3	could	could	MD
cord-003571-upogtny6	92	4	have	have	VB
cord-003571-upogtny6	92	5	adverse	adverse	JJ
cord-003571-upogtny6	92	6	epidemiologic	epidemiologic	JJ
cord-003571-upogtny6	92	7	consequences	consequence	NNS
cord-003571-upogtny6	92	8	,	,	,
cord-003571-upogtny6	92	9	and	and	CC
cord-003571-upogtny6	92	10	these	these	DT
cord-003571-upogtny6	92	11	risks	risk	NNS
cord-003571-upogtny6	92	12	need	need	VBP
cord-003571-upogtny6	92	13	to	to	TO
cord-003571-upogtny6	92	14	be	be	VB
cord-003571-upogtny6	92	15	projected	project	VBN
cord-003571-upogtny6	92	16	and	and	CC
cord-003571-upogtny6	92	17	monitored	monitor	VBN
cord-003571-upogtny6	92	18	carefully	carefully	RB
cord-003571-upogtny6	92	19	.	.	.
cord-003571-upogtny6	93	1	The	the	DT
cord-003571-upogtny6	93	2	1918	1918	CD
cord-003571-upogtny6	93	3	pandemic	pandemic	NN
cord-003571-upogtny6	93	4	is	be	VBZ
cord-003571-upogtny6	93	5	traditionally	traditionally	RB
cord-003571-upogtny6	93	6	considered	consider	VBN
cord-003571-upogtny6	93	7	a	a	DT
cord-003571-upogtny6	93	8	worst	bad	JJS
cord-003571-upogtny6	93	9	-	-	HYPH
cord-003571-upogtny6	93	10	case	case	NN
cord-003571-upogtny6	93	11	scenario	scenario	NN
cord-003571-upogtny6	93	12	for	for	IN
cord-003571-upogtny6	93	13	pandemic	pandemic	JJ
cord-003571-upogtny6	93	14	preparedness	preparedness	NN
cord-003571-upogtny6	93	15	,	,	,
cord-003571-upogtny6	93	16	but	but	CC
cord-003571-upogtny6	93	17	there	there	EX
cord-003571-upogtny6	93	18	were	be	VBD
cord-003571-upogtny6	93	19	many	many	JJ
cord-003571-upogtny6	93	20	other	other	JJ
cord-003571-upogtny6	93	21	pandemics	pandemic	NNS
cord-003571-upogtny6	93	22	before	before	IN
cord-003571-upogtny6	93	23	1918	1918	CD
cord-003571-upogtny6	93	24	about	about	IN
cord-003571-upogtny6	93	25	which	which	WDT
cord-003571-upogtny6	93	26	we	-PRON-	PRP
cord-003571-upogtny6	93	27	know	know	VBP
cord-003571-upogtny6	93	28	very	very	RB
cord-003571-upogtny6	93	29	little	little	JJ
cord-003571-upogtny6	93	30	regarding	regard	VBG
cord-003571-upogtny6	93	31	mortality	mortality	NN
cord-003571-upogtny6	93	32	impact	impact	NN
cord-003571-upogtny6	93	33	,	,	,
cord-003571-upogtny6	93	34	circulating	circulate	VBG
cord-003571-upogtny6	93	35	strains	strain	NNS
cord-003571-upogtny6	93	36	,	,	,
cord-003571-upogtny6	93	37	or	or	CC
cord-003571-upogtny6	93	38	prior	prior	JJ
cord-003571-upogtny6	93	39	immunity	immunity	NN
cord-003571-upogtny6	93	40	.	.	.
cord-003571-upogtny6	94	1	In	in	IN
cord-003571-upogtny6	94	2	fact	fact	NN
cord-003571-upogtny6	94	3	,	,	,
cord-003571-upogtny6	94	4	the	the	DT
cord-003571-upogtny6	94	5	1889	1889	CD
cord-003571-upogtny6	94	6	pandemic	pandemic	NN
cord-003571-upogtny6	94	7	has	have	VBZ
cord-003571-upogtny6	94	8	only	only	RB
cord-003571-upogtny6	94	9	recently	recently	RB
cord-003571-upogtny6	94	10	drawn	draw	VBN
cord-003571-upogtny6	94	11	attention	attention	NN
cord-003571-upogtny6	94	12	among	among	IN
cord-003571-upogtny6	94	13	epidemiologists	epidemiologist	NNS
cord-003571-upogtny6	94	14	(	(	-LRB-
cord-003571-upogtny6	94	15	26	26	CD
cord-003571-upogtny6	94	16	,	,	,
cord-003571-upogtny6	94	17	27	27	CD
cord-003571-upogtny6	94	18	)	)	-RRB-
cord-003571-upogtny6	94	19	.	.	.
cord-003571-upogtny6	95	1	Most	Most	JJS
cord-003571-upogtny6	95	2	European	european	JJ
cord-003571-upogtny6	95	3	and	and	CC
cord-003571-upogtny6	95	4	North	north	JJ
cord-003571-upogtny6	95	5	American	american	JJ
cord-003571-upogtny6	95	6	countries	country	NNS
cord-003571-upogtny6	95	7	began	begin	VBD
cord-003571-upogtny6	95	8	formal	formal	JJ
cord-003571-upogtny6	95	9	collection	collection	NN
cord-003571-upogtny6	95	10	of	of	IN
cord-003571-upogtny6	95	11	vital	vital	JJ
cord-003571-upogtny6	95	12	statistics	statistic	NNS
cord-003571-upogtny6	95	13	in	in	IN
cord-003571-upogtny6	95	14	the	the	DT
cord-003571-upogtny6	95	15	mid	mid	NN
cord-003571-upogtny6	95	16	-	-	HYPH
cord-003571-upogtny6	95	17	to	to	IN
cord-003571-upogtny6	95	18	-	-	HYPH
cord-003571-upogtny6	95	19	late	late	JJ
cord-003571-upogtny6	95	20	19th	19th	JJ
cord-003571-upogtny6	95	21	century	century	NN
cord-003571-upogtny6	95	22	,	,	,
cord-003571-upogtny6	95	23	so	so	IN
cord-003571-upogtny6	95	24	that	that	IN
cord-003571-upogtny6	95	25	any	any	DT
cord-003571-upogtny6	95	26	pandemic	pandemic	NN
cord-003571-upogtny6	95	27	predating	predate	VBG
cord-003571-upogtny6	95	28	1850	1850	CD
cord-003571-upogtny6	95	29	can	can	MD
cord-003571-upogtny6	95	30	only	only	RB
cord-003571-upogtny6	95	31	be	be	VB
cord-003571-upogtny6	95	32	explored	explore	VBN
cord-003571-upogtny6	95	33	using	use	VBG
cord-003571-upogtny6	95	34	church	church	NN
cord-003571-upogtny6	95	35	or	or	CC
cord-003571-upogtny6	95	36	cemetery	cemetery	NN
cord-003571-upogtny6	95	37	records	record	NNS
cord-003571-upogtny6	95	38	(	(	-LRB-
cord-003571-upogtny6	95	39	or	or	CC
cord-003571-upogtny6	95	40	indirectly	indirectly	RB
cord-003571-upogtny6	95	41	through	through	IN
cord-003571-upogtny6	95	42	reconstruction	reconstruction	NN
cord-003571-upogtny6	95	43	of	of	IN
cord-003571-upogtny6	95	44	modern	modern	JJ
cord-003571-upogtny6	95	45	pandemics	pandemic	NNS
cord-003571-upogtny6	95	46	)	)	-RRB-
cord-003571-upogtny6	95	47	.	.	.
cord-003571-upogtny6	96	1	Digitization	digitization	NN
cord-003571-upogtny6	96	2	of	of	IN
cord-003571-upogtny6	96	3	historic	historic	JJ
cord-003571-upogtny6	96	4	records	record	NNS
cord-003571-upogtny6	96	5	is	be	VBZ
cord-003571-upogtny6	96	6	time	time	NN
cord-003571-upogtny6	96	7	consuming	consume	VBG
cord-003571-upogtny6	96	8	,	,	,
cord-003571-upogtny6	96	9	data	datum	NNS
cord-003571-upogtny6	96	10	lack	lack	NN
cord-003571-upogtny6	96	11	standardization	standardization	NN
cord-003571-upogtny6	96	12	,	,	,
cord-003571-upogtny6	96	13	and	and	CC
cord-003571-upogtny6	96	14	information	information	NN
cord-003571-upogtny6	96	15	is	be	VBZ
cord-003571-upogtny6	96	16	generally	generally	RB
cord-003571-upogtny6	96	17	limited	limit	VBN
cord-003571-upogtny6	96	18	to	to	IN
cord-003571-upogtny6	96	19	small	small	JJ
cord-003571-upogtny6	96	20	populations	population	NNS
cord-003571-upogtny6	96	21	.	.	.
cord-003571-upogtny6	97	1	Even	even	RB
cord-003571-upogtny6	97	2	with	with	IN
cord-003571-upogtny6	97	3	regard	regard	NN
cord-003571-upogtny6	97	4	to	to	IN
cord-003571-upogtny6	97	5	the	the	DT
cord-003571-upogtny6	97	6	1918	1918	CD
cord-003571-upogtny6	97	7	pandemic	pandemic	NN
cord-003571-upogtny6	97	8	,	,	,
cord-003571-upogtny6	97	9	crucial	crucial	JJ
cord-003571-upogtny6	97	10	questions	question	NNS
cord-003571-upogtny6	97	11	may	may	MD
cord-003571-upogtny6	97	12	never	never	RB
cord-003571-upogtny6	97	13	be	be	VB
cord-003571-upogtny6	97	14	answered	answer	VBN
cord-003571-upogtny6	97	15	,	,	,
cord-003571-upogtny6	97	16	including	include	VBG
cord-003571-upogtny6	97	17	which	which	WDT
cord-003571-upogtny6	97	18	specific	specific	JJ
cord-003571-upogtny6	97	19	virus	virus	NN
cord-003571-upogtny6	97	20	(	(	-LRB-
cord-003571-upogtny6	97	21	or	or	CC
cord-003571-upogtny6	97	22	even	even	RB
cord-003571-upogtny6	97	23	subtype	subtype	NN
cord-003571-upogtny6	97	24	)	)	-RRB-
cord-003571-upogtny6	97	25	circulated	circulate	VBN
cord-003571-upogtny6	97	26	before	before	IN
cord-003571-upogtny6	97	27	1918	1918	CD
cord-003571-upogtny6	97	28	and	and	CC
cord-003571-upogtny6	97	29	further	far	RBR
cord-003571-upogtny6	97	30	back	back	RB
cord-003571-upogtny6	97	31	into	into	IN
cord-003571-upogtny6	97	32	the	the	DT
cord-003571-upogtny6	97	33	19th	19th	JJ
cord-003571-upogtny6	97	34	century	century	NN
cord-003571-upogtny6	97	35	and	and	CC
cord-003571-upogtny6	97	36	what	what	WP
cord-003571-upogtny6	97	37	the	the	DT
cord-003571-upogtny6	97	38	population	population	NN
cord-003571-upogtny6	97	39	immunity	immunity	NN
cord-003571-upogtny6	97	40	profile	profile	NN
cord-003571-upogtny6	97	41	was	be	VBD
cord-003571-upogtny6	97	42	before	before	IN
cord-003571-upogtny6	97	43	the	the	DT
cord-003571-upogtny6	97	44	pandemic	pandemic	NN
cord-003571-upogtny6	97	45	.	.	.
cord-003571-upogtny6	98	1	The	the	DT
cord-003571-upogtny6	98	2	search	search	NN
cord-003571-upogtny6	98	3	for	for	IN
cord-003571-upogtny6	98	4	archival	archival	JJ
cord-003571-upogtny6	98	5	influenza	influenza	NN
cord-003571-upogtny6	98	6	specimens	specimen	NNS
cord-003571-upogtny6	98	7	predating	predate	VBG
cord-003571-upogtny6	98	8	1918	1918	CD
cord-003571-upogtny6	98	9	has	have	VBZ
cord-003571-upogtny6	98	10	remained	remain	VBN
cord-003571-upogtny6	98	11	elusive	elusive	JJ
cord-003571-upogtny6	98	12	,	,	,
cord-003571-upogtny6	98	13	and	and	CC
cord-003571-upogtny6	98	14	to	to	IN
cord-003571-upogtny6	98	15	our	-PRON-	PRP$
cord-003571-upogtny6	98	16	knowledge	knowledge	NN
cord-003571-upogtny6	98	17	no	no	DT
cord-003571-upogtny6	98	18	archived	archive	VBN
cord-003571-upogtny6	98	19	sera	sera	NNP
cord-003571-upogtny6	98	20	exist	exist	VBP
cord-003571-upogtny6	98	21	from	from	IN
cord-003571-upogtny6	98	22	this	this	DT
cord-003571-upogtny6	98	23	period	period	NN
cord-003571-upogtny6	98	24	.	.	.
cord-003571-upogtny6	99	1	In	in	IN
cord-003571-upogtny6	99	2	the	the	DT
cord-003571-upogtny6	99	3	absence	absence	NN
cord-003571-upogtny6	99	4	of	of	IN
cord-003571-upogtny6	99	5	further	further	JJ
cord-003571-upogtny6	99	6	virologic	virologic	JJ
cord-003571-upogtny6	99	7	evidence	evidence	NN
cord-003571-upogtny6	99	8	,	,	,
cord-003571-upogtny6	99	9	our	-PRON-	PRP$
cord-003571-upogtny6	99	10	understanding	understanding	NN
cord-003571-upogtny6	99	11	of	of	IN
cord-003571-upogtny6	99	12	the	the	DT
cord-003571-upogtny6	99	13	origins	origin	NNS
cord-003571-upogtny6	99	14	of	of	IN
cord-003571-upogtny6	99	15	the	the	DT
cord-003571-upogtny6	99	16	pandemic	pandemic	NN
cord-003571-upogtny6	99	17	is	be	VBZ
cord-003571-upogtny6	99	18	limited	limit	VBN
cord-003571-upogtny6	99	19	to	to	IN
cord-003571-upogtny6	99	20	a	a	DT
cord-003571-upogtny6	99	21	handful	handful	NN
cord-003571-upogtny6	99	22	of	of	IN
cord-003571-upogtny6	99	23	influenza	influenza	NN
cord-003571-upogtny6	99	24	virus	virus	NN
cord-003571-upogtny6	99	25	sequences	sequence	NNS
cord-003571-upogtny6	99	26	collected	collect	VBN
cord-003571-upogtny6	99	27	during	during	IN
cord-003571-upogtny6	99	28	May	May	NNP
cord-003571-upogtny6	99	29	to	to	IN
cord-003571-upogtny6	99	30	November	November	NNP
cord-003571-upogtny6	99	31	1918	1918	CD
cord-003571-upogtny6	99	32	and	and	CC
cord-003571-upogtny6	99	33	to	to	IN
cord-003571-upogtny6	99	34	the	the	DT
cord-003571-upogtny6	99	35	epidemiologic	epidemiologic	JJ
cord-003571-upogtny6	99	36	signature	signature	NN
cord-003571-upogtny6	99	37	of	of	IN
cord-003571-upogtny6	99	38	the	the	DT
cord-003571-upogtny6	99	39	1918	1918	CD
cord-003571-upogtny6	99	40	virus	virus	NN
cord-003571-upogtny6	99	41	in	in	IN
cord-003571-upogtny6	99	42	different	different	JJ
cord-003571-upogtny6	99	43	populations	population	NNS
cord-003571-upogtny6	99	44	.	.	.
cord-003571-upogtny6	100	1	As	as	IN
cord-003571-upogtny6	100	2	Nelson	Nelson	NNP
cord-003571-upogtny6	100	3	and	and	CC
cord-003571-upogtny6	100	4	Worobey	Worobey	NNP
cord-003571-upogtny6	100	5	noted	note	VBD
cord-003571-upogtny6	100	6	(	(	-LRB-
cord-003571-upogtny6	100	7	5	5	CD
cord-003571-upogtny6	100	8	)	)	-RRB-
cord-003571-upogtny6	100	9	,	,	,
cord-003571-upogtny6	100	10	more	more	JJR
cord-003571-upogtny6	100	11	work	work	NN
cord-003571-upogtny6	100	12	can	can	MD
cord-003571-upogtny6	100	13	be	be	VB
cord-003571-upogtny6	100	14	done	do	VBN
cord-003571-upogtny6	100	15	in	in	IN
cord-003571-upogtny6	100	16	this	this	DT
cord-003571-upogtny6	100	17	area	area	NN
cord-003571-upogtny6	100	18	,	,	,
cord-003571-upogtny6	100	19	particularly	particularly	RB
cord-003571-upogtny6	100	20	to	to	TO
cord-003571-upogtny6	100	21	explore	explore	VB
cord-003571-upogtny6	100	22	the	the	DT
cord-003571-upogtny6	100	23	uracil	uracil	NN
cord-003571-upogtny6	100	24	content	content	NN
cord-003571-upogtny6	100	25	of	of	IN
cord-003571-upogtny6	100	26	post-1918	post-1918	NN
cord-003571-upogtny6	100	27	viruses	virus	NNS
cord-003571-upogtny6	100	28	in	in	IN
cord-003571-upogtny6	100	29	different	different	JJ
cord-003571-upogtny6	100	30	hosts	host	NNS
cord-003571-upogtny6	100	31	,	,	,
cord-003571-upogtny6	100	32	reconstruct	reconstruct	VB
cord-003571-upogtny6	100	33	their	-PRON-	PRP$
cord-003571-upogtny6	100	34	evolutionary	evolutionary	JJ
cord-003571-upogtny6	100	35	trajectories	trajectory	NNS
cord-003571-upogtny6	100	36	,	,	,
cord-003571-upogtny6	100	37	and	and	CC
cord-003571-upogtny6	100	38	better	well	RBR
cord-003571-upogtny6	100	39	characterize	characterize	VB
cord-003571-upogtny6	100	40	host	host	NN
cord-003571-upogtny6	100	41	receptors	receptor	NNS
cord-003571-upogtny6	100	42	and	and	CC
cord-003571-upogtny6	100	43	barriers	barrier	NNS
cord-003571-upogtny6	100	44	to	to	IN
cord-003571-upogtny6	100	45	cross	cross	NN
cord-003571-upogtny6	100	46	-	-	NNS
cord-003571-upogtny6	100	47	species	species	JJ
cord-003571-upogtny6	100	48	jumps	jump	NNS
cord-003571-upogtny6	100	49	.	.	.
cord-003571-upogtny6	101	1	Further	further	RB
cord-003571-upogtny6	101	2	,	,	,
cord-003571-upogtny6	101	3	as	as	IN
cord-003571-upogtny6	101	4	Rice	Rice	NNP
cord-003571-upogtny6	101	5	(	(	-LRB-
cord-003571-upogtny6	101	6	8)	8)	NNP
cord-003571-upogtny6	101	7	and	and	CC
cord-003571-upogtny6	101	8	Dahal	Dahal	NNP
cord-003571-upogtny6	101	9	et	et	FW
cord-003571-upogtny6	101	10	al	al	NNP
cord-003571-upogtny6	101	11	.	.	.
cord-003571-upogtny6	102	1	(	(	-LRB-
cord-003571-upogtny6	102	2	14	14	CD
cord-003571-upogtny6	102	3	)	)	-RRB-
cord-003571-upogtny6	102	4	noted	note	VBD
cord-003571-upogtny6	102	5	,	,	,
cord-003571-upogtny6	102	6	a	a	DT
cord-003571-upogtny6	102	7	systematic	systematic	JJ
cord-003571-upogtny6	102	8	analysis	analysis	NN
cord-003571-upogtny6	102	9	of	of	IN
cord-003571-upogtny6	102	10	the	the	DT
cord-003571-upogtny6	102	11	age	age	NN
cord-003571-upogtny6	102	12	mortality	mortality	NN
cord-003571-upogtny6	102	13	profiles	profile	NNS
cord-003571-upogtny6	102	14	of	of	IN
cord-003571-upogtny6	102	15	the	the	DT
cord-003571-upogtny6	102	16	1918	1918	CD
cord-003571-upogtny6	102	17	pandemic	pandemic	NN
cord-003571-upogtny6	102	18	in	in	IN
cord-003571-upogtny6	102	19	a	a	DT
cord-003571-upogtny6	102	20	sample	sample	NN
cord-003571-upogtny6	102	21	of	of	IN
cord-003571-upogtny6	102	22	remote	remote	JJ
cord-003571-upogtny6	102	23	and	and	CC
cord-003571-upogtny6	102	24	wellconnected	wellconnected	JJ
cord-003571-upogtny6	102	25	locations	location	NNS
cord-003571-upogtny6	102	26	would	would	MD
cord-003571-upogtny6	102	27	be	be	VB
cord-003571-upogtny6	102	28	most	most	RBS
cord-003571-upogtny6	102	29	useful	useful	JJ
cord-003571-upogtny6	102	30	,	,	,
cord-003571-upogtny6	102	31	together	together	RB
cord-003571-upogtny6	102	32	with	with	IN
cord-003571-upogtny6	102	33	modeling	modeling	NN
cord-003571-upogtny6	102	34	of	of	IN
cord-003571-upogtny6	102	35	plausible	plausible	JJ
cord-003571-upogtny6	102	36	biological	biological	JJ
cord-003571-upogtny6	102	37	hypotheses	hypothesis	NNS
cord-003571-upogtny6	102	38	and	and	CC
cord-003571-upogtny6	102	39	immune	immune	JJ
cord-003571-upogtny6	102	40	histories	history	NNS
cord-003571-upogtny6	102	41	most	most	RBS
cord-003571-upogtny6	102	42	consistent	consistent	JJ
cord-003571-upogtny6	102	43	with	with	IN
cord-003571-upogtny6	102	44	the	the	DT
cord-003571-upogtny6	102	45	data	datum	NNS
cord-003571-upogtny6	102	46	.	.	.
cord-003571-upogtny6	103	1	databases	database	NNS
cord-003571-upogtny6	103	2	,	,	,
cord-003571-upogtny6	103	3	which	which	WDT
cord-003571-upogtny6	103	4	are	be	VBP
cord-003571-upogtny6	103	5	often	often	RB
cord-003571-upogtny6	103	6	crowdsourced	crowdsource	VBN
cord-003571-upogtny6	103	7	or	or	CC
cord-003571-upogtny6	103	8	maintained	maintain	VBN
cord-003571-upogtny6	103	9	by	by	IN
cord-003571-upogtny6	103	10	state	state	NN
cord-003571-upogtny6	103	11	health	health	NN
cord-003571-upogtny6	103	12	departments	department	NNS
cord-003571-upogtny6	103	13	(	(	-LRB-
cord-003571-upogtny6	103	14	14	14	CD
cord-003571-upogtny6	103	15	)	)	-RRB-
cord-003571-upogtny6	103	16	.	.	.
cord-003571-upogtny6	104	1	Further	further	JJ
cord-003571-upogtny6	104	2	analyses	analysis	NNS
cord-003571-upogtny6	104	3	of	of	IN
cord-003571-upogtny6	104	4	such	such	JJ
cord-003571-upogtny6	104	5	data	datum	NNS
cord-003571-upogtny6	104	6	could	could	MD
cord-003571-upogtny6	104	7	shed	shed	VB
cord-003571-upogtny6	104	8	light	light	NN
cord-003571-upogtny6	104	9	on	on	IN
cord-003571-upogtny6	104	10	the	the	DT
cord-003571-upogtny6	104	11	mortality	mortality	NN
cord-003571-upogtny6	104	12	profile	profile	NN
cord-003571-upogtny6	104	13	of	of	IN
cord-003571-upogtny6	104	14	the	the	DT
cord-003571-upogtny6	104	15	pandemic	pandemic	NN
cord-003571-upogtny6	104	16	in	in	IN
cord-003571-upogtny6	104	17	understudied	understudied	JJ
cord-003571-upogtny6	104	18	locations	location	NNS
cord-003571-upogtny6	104	19	and	and	CC
cord-003571-upogtny6	104	20	would	would	MD
cord-003571-upogtny6	104	21	also	also	RB
cord-003571-upogtny6	104	22	allow	allow	VB
cord-003571-upogtny6	104	23	identification	identification	NN
cord-003571-upogtny6	104	24	of	of	IN
cord-003571-upogtny6	104	25	family	family	NN
cord-003571-upogtny6	104	26	linkage	linkage	NN
cord-003571-upogtny6	104	27	and	and	CC
cord-003571-upogtny6	104	28	host	host	NN
cord-003571-upogtny6	104	29	genetic	genetic	JJ
cord-003571-upogtny6	104	30	risk	risk	NN
cord-003571-upogtny6	104	31	factors	factor	NNS
cord-003571-upogtny6	104	32	,	,	,
cord-003571-upogtny6	104	33	which	which	WDT
cord-003571-upogtny6	104	34	could	could	MD
cord-003571-upogtny6	104	35	be	be	VB
cord-003571-upogtny6	104	36	tested	test	VBN
cord-003571-upogtny6	104	37	among	among	IN
cord-003571-upogtny6	104	38	descendants	descendant	NNS
cord-003571-upogtny6	104	39	.	.	.
cord-003571-upogtny6	105	1	Many	many	JJ
cord-003571-upogtny6	105	2	other	other	JJ
cord-003571-upogtny6	105	3	library	library	NN
cord-003571-upogtny6	105	4	archives	archive	NNS
cord-003571-upogtny6	105	5	exist	exist	VBP
cord-003571-upogtny6	105	6	,	,	,
cord-003571-upogtny6	105	7	although	although	IN
cord-003571-upogtny6	105	8	paper	paper	NN
cord-003571-upogtny6	105	9	-	-	HYPH
cord-003571-upogtny6	105	10	based	base	VBN
cord-003571-upogtny6	105	11	records	record	NNS
cord-003571-upogtny6	105	12	rapidly	rapidly	RB
cord-003571-upogtny6	105	13	decay	decay	VBP
cord-003571-upogtny6	105	14	and	and	CC
cord-003571-upogtny6	105	15	need	need	VBP
cord-003571-upogtny6	105	16	to	to	TO
cord-003571-upogtny6	105	17	be	be	VB
cord-003571-upogtny6	105	18	digitized	digitize	VBN
cord-003571-upogtny6	105	19	as	as	RB
cord-003571-upogtny6	105	20	quickly	quickly	RB
cord-003571-upogtny6	105	21	as	as	IN
cord-003571-upogtny6	105	22	possible	possible	JJ
cord-003571-upogtny6	105	23	.	.	.
cord-003571-upogtny6	106	1	The	the	DT
cord-003571-upogtny6	106	2	detailed	detailed	JJ
cord-003571-upogtny6	106	3	,	,	,
cord-003571-upogtny6	106	4	sometimes	sometimes	RB
cord-003571-upogtny6	106	5	freeform	freeform	JJ
cord-003571-upogtny6	106	6	,	,	,
cord-003571-upogtny6	106	7	notes	note	NNS
cord-003571-upogtny6	106	8	typically	typically	RB
cord-003571-upogtny6	106	9	kept	keep	VBN
cord-003571-upogtny6	106	10	by	by	IN
cord-003571-upogtny6	106	11	the	the	DT
cord-003571-upogtny6	106	12	scientists	scientist	NNS
cord-003571-upogtny6	106	13	at	at	IN
cord-003571-upogtny6	106	14	the	the	DT
cord-003571-upogtny6	106	15	time	time	NN
cord-003571-upogtny6	106	16	mean	mean	VBP
cord-003571-upogtny6	106	17	that	that	DT
cord-003571-upogtny6	106	18	careful	careful	JJ
cord-003571-upogtny6	106	19	examination	examination	NN
cord-003571-upogtny6	106	20	of	of	IN
cord-003571-upogtny6	106	21	these	these	DT
cord-003571-upogtny6	106	22	archives	archive	NNS
cord-003571-upogtny6	106	23	can	can	MD
cord-003571-upogtny6	106	24	sometimes	sometimes	RB
cord-003571-upogtny6	106	25	yield	yield	VB
cord-003571-upogtny6	106	26	surprising	surprising	JJ
cord-003571-upogtny6	106	27	fruit	fruit	NN
cord-003571-upogtny6	106	28	.	.	.
cord-003571-upogtny6	107	1	One	one	CD
cord-003571-upogtny6	107	2	such	such	JJ
cord-003571-upogtny6	107	3	resource	resource	NN
cord-003571-upogtny6	107	4	is	be	VBZ
cord-003571-upogtny6	107	5	the	the	DT
cord-003571-upogtny6	107	6	work	work	NN
cord-003571-upogtny6	107	7	of	of	IN
cord-003571-upogtny6	107	8	Wade	Wade	NNP
cord-003571-upogtny6	107	9	Hampton	Hampton	NNP
cord-003571-upogtny6	107	10	Frost	Frost	NNP
cord-003571-upogtny6	107	11	,	,	,
cord-003571-upogtny6	107	12	who	who	WP
cord-003571-upogtny6	107	13	was	be	VBD
cord-003571-upogtny6	107	14	the	the	DT
cord-003571-upogtny6	107	15	first	first	JJ
cord-003571-upogtny6	107	16	chair	chair	NN
cord-003571-upogtny6	107	17	of	of	IN
cord-003571-upogtny6	107	18	the	the	DT
cord-003571-upogtny6	107	19	Department	Department	NNP
cord-003571-upogtny6	107	20	of	of	IN
cord-003571-upogtny6	107	21	Epidemiology	Epidemiology	NNP
cord-003571-upogtny6	107	22	at	at	IN
cord-003571-upogtny6	107	23	Johns	Johns	NNP
cord-003571-upogtny6	107	24	Hopkins	Hopkins	NNP
cord-003571-upogtny6	107	25	University	University	NNP
cord-003571-upogtny6	107	26	and	and	CC
cord-003571-upogtny6	107	27	a	a	DT
cord-003571-upogtny6	107	28	critical	critical	JJ
cord-003571-upogtny6	107	29	figure	figure	NN
cord-003571-upogtny6	107	30	in	in	IN
cord-003571-upogtny6	107	31	the	the	DT
cord-003571-upogtny6	107	32	fight	fight	NN
cord-003571-upogtny6	107	33	against	against	IN
cord-003571-upogtny6	107	34	the	the	DT
cord-003571-upogtny6	107	35	1918	1918	CD
cord-003571-upogtny6	107	36	pandemic	pandemic	NN
cord-003571-upogtny6	107	37	.	.	.
cord-003571-upogtny6	108	1	Modern	modern	JJ
cord-003571-upogtny6	108	2	reanalysis	reanalysis	NN
cord-003571-upogtny6	108	3	of	of	IN
cord-003571-upogtny6	108	4	Dr.	Dr.	NNP
cord-003571-upogtny6	108	5	Frost	Frost	NNP
cord-003571-upogtny6	108	6	's	's	POS
cord-003571-upogtny6	108	7	detailed	detailed	JJ
cord-003571-upogtny6	108	8	work	work	NN
cord-003571-upogtny6	108	9	(	(	-LRB-
cord-003571-upogtny6	108	10	3	3	CD
cord-003571-upogtny6	108	11	)	)	-RRB-
cord-003571-upogtny6	108	12	has	have	VBZ
cord-003571-upogtny6	108	13	already	already	RB
cord-003571-upogtny6	108	14	yielded	yield	VBN
cord-003571-upogtny6	108	15	abundant	abundant	JJ
cord-003571-upogtny6	108	16	insights	insight	NNS
cord-003571-upogtny6	108	17	,	,	,
cord-003571-upogtny6	108	18	and	and	CC
cord-003571-upogtny6	108	19	we	-PRON-	PRP
cord-003571-upogtny6	108	20	included	include	VBD
cord-003571-upogtny6	108	21	digital	digital	JJ
cord-003571-upogtny6	108	22	copies	copy	NNS
cord-003571-upogtny6	108	23	of	of	IN
cord-003571-upogtny6	108	24	his	-PRON-	PRP$
cord-003571-upogtny6	108	25	papers	paper	NNS
cord-003571-upogtny6	108	26	on	on	IN
cord-003571-upogtny6	108	27	the	the	DT
cord-003571-upogtny6	108	28	1918	1918	CD
cord-003571-upogtny6	108	29	pandemic	pandemic	NN
cord-003571-upogtny6	108	30	from	from	IN
cord-003571-upogtny6	108	31	the	the	DT
cord-003571-upogtny6	108	32	Chesney	Chesney	NNP
cord-003571-upogtny6	108	33	archive	archive	NN
cord-003571-upogtny6	108	34	in	in	IN
cord-003571-upogtny6	108	35	the	the	DT
cord-003571-upogtny6	108	36	Web	web	NN
cord-003571-upogtny6	108	37	Appendix	Appendix	NNP
cord-003571-upogtny6	108	38	(	(	-LRB-
cord-003571-upogtny6	108	39	available	available	JJ
cord-003571-upogtny6	108	40	at	at	IN
cord-003571-upogtny6	108	41	https://academic	https://academic	NNP
cord-003571-upogtny6	108	42	.	.	.
cord-003571-upogtny6	109	1	oup.com/aje	oup.com/aje	NNP
cord-003571-upogtny6	109	2	)	)	-RRB-
cord-003571-upogtny6	109	3	.	.	.
cord-003571-upogtny6	110	1	The	the	DT
cord-003571-upogtny6	110	2	1918	1918	CD
cord-003571-upogtny6	110	3	pandemic	pandemic	NN
cord-003571-upogtny6	110	4	is	be	VBZ
cord-003571-upogtny6	110	5	remarkable	remarkable	JJ
cord-003571-upogtny6	110	6	for	for	IN
cord-003571-upogtny6	110	7	the	the	DT
cord-003571-upogtny6	110	8	large	large	JJ
cord-003571-upogtny6	110	9	amount	amount	NN
cord-003571-upogtny6	110	10	of	of	IN
cord-003571-upogtny6	110	11	extremely	extremely	RB
cord-003571-upogtny6	110	12	detailed	detailed	JJ
cord-003571-upogtny6	110	13	epidemiologic	epidemiologic	JJ
cord-003571-upogtny6	110	14	data	datum	NNS
cord-003571-upogtny6	110	15	collected	collect	VBN
cord-003571-upogtny6	110	16	by	by	IN
cord-003571-upogtny6	110	17	public	public	JJ
cord-003571-upogtny6	110	18	health	health	NN
cord-003571-upogtny6	110	19	officials	official	NNS
cord-003571-upogtny6	110	20	(	(	-LRB-
cord-003571-upogtny6	110	21	2	2	CD
cord-003571-upogtny6	110	22	,	,	,
cord-003571-upogtny6	110	23	3	3	CD
cord-003571-upogtny6	110	24	)	)	-RRB-
cord-003571-upogtny6	110	25	,	,	,
cord-003571-upogtny6	110	26	in	in	IN
cord-003571-upogtny6	110	27	part	part	NN
cord-003571-upogtny6	110	28	because	because	IN
cord-003571-upogtny6	110	29	it	-PRON-	PRP
cord-003571-upogtny6	110	30	was	be	VBD
cord-003571-upogtny6	110	31	an	an	DT
cord-003571-upogtny6	110	32	era	era	NN
cord-003571-upogtny6	110	33	that	that	WDT
cord-003571-upogtny6	110	34	valued	value	VBD
cord-003571-upogtny6	110	35	epidemiology	epidemiology	NN
cord-003571-upogtny6	110	36	,	,	,
cord-003571-upogtny6	110	37	at	at	IN
cord-003571-upogtny6	110	38	a	a	DT
cord-003571-upogtny6	110	39	time	time	NN
cord-003571-upogtny6	110	40	when	when	WRB
cord-003571-upogtny6	110	41	analytical	analytical	JJ
cord-003571-upogtny6	110	42	approaches	approach	NNS
cord-003571-upogtny6	110	43	and	and	CC
cord-003571-upogtny6	110	44	knowledge	knowledge	NN
cord-003571-upogtny6	110	45	of	of	IN
cord-003571-upogtny6	110	46	infectious	infectious	JJ
cord-003571-upogtny6	110	47	agents	agent	NNS
cord-003571-upogtny6	110	48	were	be	VBD
cord-003571-upogtny6	110	49	limited	limit	VBN
cord-003571-upogtny6	110	50	.	.	.
cord-003571-upogtny6	111	1	These	these	DT
cord-003571-upogtny6	111	2	exquisitely	exquisitely	RB
cord-003571-upogtny6	111	3	detailed	detailed	JJ
cord-003571-upogtny6	111	4	records	record	NNS
cord-003571-upogtny6	111	5	have	have	VBP
cord-003571-upogtny6	111	6	been	be	VBN
cord-003571-upogtny6	111	7	particularly	particularly	RB
cord-003571-upogtny6	111	8	useful	useful	JJ
cord-003571-upogtny6	111	9	in	in	IN
cord-003571-upogtny6	111	10	the	the	DT
cord-003571-upogtny6	111	11	attempt	attempt	NN
cord-003571-upogtny6	111	12	to	to	TO
cord-003571-upogtny6	111	13	understand	understand	VB
cord-003571-upogtny6	111	14	the	the	DT
cord-003571-upogtny6	111	15	pandemic	pandemic	NN
cord-003571-upogtny6	111	16	retrospectively	retrospectively	RB
cord-003571-upogtny6	111	17	.	.	.
cord-003571-upogtny6	112	1	As	as	IN
cord-003571-upogtny6	112	2	a	a	DT
cord-003571-upogtny6	112	3	thought	thought	NN
cord-003571-upogtny6	112	4	experiment	experiment	NN
cord-003571-upogtny6	112	5	,	,	,
cord-003571-upogtny6	112	6	we	-PRON-	PRP
cord-003571-upogtny6	112	7	can	can	MD
cord-003571-upogtny6	112	8	imagine	imagine	VB
cord-003571-upogtny6	112	9	ourselves	-PRON-	PRP
cord-003571-upogtny6	112	10	in	in	IN
cord-003571-upogtny6	112	11	2118	2118	CD
cord-003571-upogtny6	112	12	:	:	:
cord-003571-upogtny6	112	13	We	-PRON-	PRP
cord-003571-upogtny6	112	14	may	may	MD
cord-003571-upogtny6	112	15	ask	ask	VB
cord-003571-upogtny6	112	16	how	how	WRB
cord-003571-upogtny6	112	17	scientists	scientist	NNS
cord-003571-upogtny6	112	18	would	would	MD
cord-003571-upogtny6	112	19	look	look	VB
cord-003571-upogtny6	112	20	back	back	RB
cord-003571-upogtny6	112	21	at	at	IN
cord-003571-upogtny6	112	22	the	the	DT
cord-003571-upogtny6	112	23	large	large	JJ
cord-003571-upogtny6	112	24	amount	amount	NN
cord-003571-upogtny6	112	25	of	of	IN
cord-003571-upogtny6	112	26	data	datum	NNS
cord-003571-upogtny6	112	27	we	-PRON-	PRP
cord-003571-upogtny6	112	28	archive	archive	VBP
cord-003571-upogtny6	112	29	on	on	IN
cord-003571-upogtny6	112	30	a	a	DT
cord-003571-upogtny6	112	31	daily	daily	JJ
cord-003571-upogtny6	112	32	basis	basis	NN
cord-003571-upogtny6	112	33	in	in	IN
cord-003571-upogtny6	112	34	2018	2018	CD
cord-003571-upogtny6	112	35	.	.	.
cord-003571-upogtny6	113	1	On	on	IN
cord-003571-upogtny6	113	2	the	the	DT
cord-003571-upogtny6	113	3	one	one	CD
cord-003571-upogtny6	113	4	hand	hand	NN
cord-003571-upogtny6	113	5	,	,	,
cord-003571-upogtny6	113	6	much	much	RB
cord-003571-upogtny6	113	7	if	if	IN
cord-003571-upogtny6	113	8	not	not	RB
cord-003571-upogtny6	113	9	all	all	DT
cord-003571-upogtny6	113	10	of	of	IN
cord-003571-upogtny6	113	11	the	the	DT
cord-003571-upogtny6	113	12	modern	modern	JJ
cord-003571-upogtny6	113	13	data	datum	NNS
cord-003571-upogtny6	113	14	are	be	VBP
cord-003571-upogtny6	113	15	digital	digital	JJ
cord-003571-upogtny6	113	16	,	,	,
cord-003571-upogtny6	113	17	meaning	mean	VBG
cord-003571-upogtny6	113	18	that	that	IN
cord-003571-upogtny6	113	19	they	-PRON-	PRP
cord-003571-upogtny6	113	20	do	do	VBP
cord-003571-upogtny6	113	21	not	not	RB
cord-003571-upogtny6	113	22	run	run	VB
cord-003571-upogtny6	113	23	the	the	DT
cord-003571-upogtny6	113	24	risk	risk	NN
cord-003571-upogtny6	113	25	of	of	IN
cord-003571-upogtny6	113	26	being	be	VBG
cord-003571-upogtny6	113	27	destroyed	destroy	VBN
cord-003571-upogtny6	113	28	by	by	IN
cord-003571-upogtny6	113	29	fire	fire	NN
cord-003571-upogtny6	113	30	or	or	CC
cord-003571-upogtny6	113	31	floods	flood	NNS
cord-003571-upogtny6	113	32	and	and	CC
cord-003571-upogtny6	113	33	they	-PRON-	PRP
cord-003571-upogtny6	113	34	can	can	MD
cord-003571-upogtny6	113	35	be	be	VB
cord-003571-upogtny6	113	36	more	more	RBR
cord-003571-upogtny6	113	37	accessible	accessible	JJ
cord-003571-upogtny6	113	38	to	to	IN
cord-003571-upogtny6	113	39	a	a	DT
cord-003571-upogtny6	113	40	wide	wide	JJ
cord-003571-upogtny6	113	41	audience	audience	NN
cord-003571-upogtny6	113	42	,	,	,
cord-003571-upogtny6	113	43	spurred	spur	VBN
cord-003571-upogtny6	113	44	by	by	IN
cord-003571-upogtny6	113	45	the	the	DT
cord-003571-upogtny6	113	46	open	open	JJ
cord-003571-upogtny6	113	47	access	access	NN
cord-003571-upogtny6	113	48	movement	movement	NN
cord-003571-upogtny6	113	49	.	.	.
cord-003571-upogtny6	114	1	However	however	RB
cord-003571-upogtny6	114	2	,	,	,
cord-003571-upogtny6	114	3	digital	digital	JJ
cord-003571-upogtny6	114	4	data	datum	NNS
cord-003571-upogtny6	114	5	can	can	MD
cord-003571-upogtny6	114	6	also	also	RB
cord-003571-upogtny6	114	7	be	be	VB
cord-003571-upogtny6	114	8	corrupted	corrupt	VBN
cord-003571-upogtny6	114	9	(	(	-LRB-
cord-003571-upogtny6	114	10	intentionally	intentionally	RB
cord-003571-upogtny6	114	11	or	or	CC
cord-003571-upogtny6	114	12	unintentionally	unintentionally	RB
cord-003571-upogtny6	114	13	)	)	-RRB-
cord-003571-upogtny6	114	14	and	and	CC
cord-003571-upogtny6	114	15	disappear	disappear	VBP
cord-003571-upogtny6	114	16	.	.	.
cord-003571-upogtny6	115	1	Much	much	RB
cord-003571-upogtny6	115	2	from	from	IN
cord-003571-upogtny6	115	3	the	the	DT
cord-003571-upogtny6	115	4	floppy	floppy	JJ
cord-003571-upogtny6	115	5	-	-	HYPH
cord-003571-upogtny6	115	6	disk	disk	NN
cord-003571-upogtny6	115	7	era	era	NN
cord-003571-upogtny6	115	8	has	have	VBZ
cord-003571-upogtny6	115	9	already	already	RB
cord-003571-upogtny6	115	10	been	be	VBN
cord-003571-upogtny6	115	11	permanently	permanently	RB
cord-003571-upogtny6	115	12	lost	lose	VBN
cord-003571-upogtny6	115	13	,	,	,
cord-003571-upogtny6	115	14	and	and	CC
cord-003571-upogtny6	115	15	it	-PRON-	PRP
cord-003571-upogtny6	115	16	is	be	VBZ
cord-003571-upogtny6	115	17	unclear	unclear	JJ
cord-003571-upogtny6	115	18	if	if	IN
cord-003571-upogtny6	115	19	modern	modern	JJ
cord-003571-upogtny6	115	20	cloud	cloud	NN
cord-003571-upogtny6	115	21	-	-	HYPH
cord-003571-upogtny6	115	22	based	base	VBN
cord-003571-upogtny6	115	23	archives	archive	NNS
cord-003571-upogtny6	115	24	would	would	MD
cord-003571-upogtny6	115	25	survive	survive	VB
cord-003571-upogtny6	115	26	a	a	DT
cord-003571-upogtny6	115	27	major	major	JJ
cord-003571-upogtny6	115	28	disruption	disruption	NN
cord-003571-upogtny6	115	29	(	(	-LRB-
cord-003571-upogtny6	115	30	whether	whether	IN
cord-003571-upogtny6	115	31	technological	technological	JJ
cord-003571-upogtny6	115	32	or	or	CC
cord-003571-upogtny6	115	33	civil	civil	JJ
cord-003571-upogtny6	115	34	)	)	-RRB-
cord-003571-upogtny6	115	35	.	.	.
cord-003571-upogtny6	116	1	Further	further	RB
cord-003571-upogtny6	116	2	,	,	,
cord-003571-upogtny6	116	3	even	even	RB
cord-003571-upogtny6	116	4	today	today	NN
cord-003571-upogtny6	116	5	,	,	,
cord-003571-upogtny6	116	6	there	there	EX
cord-003571-upogtny6	116	7	is	be	VBZ
cord-003571-upogtny6	116	8	a	a	DT
cord-003571-upogtny6	116	9	systematic	systematic	JJ
cord-003571-upogtny6	116	10	dearth	dearth	NN
cord-003571-upogtny6	116	11	of	of	IN
cord-003571-upogtny6	116	12	epidemiologic	epidemiologic	JJ
cord-003571-upogtny6	116	13	and	and	CC
cord-003571-upogtny6	116	14	molecular	molecular	JJ
cord-003571-upogtny6	116	15	data	datum	NNS
cord-003571-upogtny6	116	16	from	from	IN
cord-003571-upogtny6	116	17	low	low	JJ
cord-003571-upogtny6	116	18	-	-	HYPH
cord-003571-upogtny6	116	19	and	and	CC
cord-003571-upogtny6	116	20	middle	middle	JJ
cord-003571-upogtny6	116	21	-	-	HYPH
cord-003571-upogtny6	116	22	income	income	NN
cord-003571-upogtny6	116	23	settings	setting	NNS
cord-003571-upogtny6	116	24	(	(	-LRB-
cord-003571-upogtny6	116	25	including	include	VBG
cord-003571-upogtny6	116	26	data	datum	NNS
cord-003571-upogtny6	116	27	on	on	IN
cord-003571-upogtny6	116	28	the	the	DT
cord-003571-upogtny6	116	29	2009	2009	CD
cord-003571-upogtny6	116	30	pandemic	pandemic	NN
cord-003571-upogtny6	116	31	(	(	-LRB-
cord-003571-upogtny6	116	32	24	24	CD
cord-003571-upogtny6	116	33	)	)	-RRB-
cord-003571-upogtny6	116	34	)	)	-RRB-
cord-003571-upogtny6	116	35	.	.	.
cord-003571-upogtny6	117	1	We	-PRON-	PRP
cord-003571-upogtny6	117	2	are	be	VBP
cord-003571-upogtny6	117	3	just	just	RB
cord-003571-upogtny6	117	4	beginning	begin	VBG
cord-003571-upogtny6	117	5	to	to	TO
cord-003571-upogtny6	117	6	scratch	scratch	VB
cord-003571-upogtny6	117	7	the	the	DT
cord-003571-upogtny6	117	8	surface	surface	NN
cord-003571-upogtny6	117	9	of	of	IN
cord-003571-upogtny6	117	10	the	the	DT
cord-003571-upogtny6	117	11	intricate	intricate	JJ
cord-003571-upogtny6	117	12	relationship	relationship	NN
cord-003571-upogtny6	117	13	between	between	IN
cord-003571-upogtny6	117	14	the	the	DT
cord-003571-upogtny6	117	15	influenza	influenza	NN
cord-003571-upogtny6	117	16	virus	virus	NN
cord-003571-upogtny6	117	17	and	and	CC
cord-003571-upogtny6	117	18	the	the	DT
cord-003571-upogtny6	117	19	complex	complex	JJ
cord-003571-upogtny6	117	20	immune	immune	JJ
cord-003571-upogtny6	117	21	history	history	NN
cord-003571-upogtny6	117	22	of	of	IN
cord-003571-upogtny6	117	23	a	a	DT
cord-003571-upogtny6	117	24	host	host	NN
cord-003571-upogtny6	117	25	who	who	WP
cord-003571-upogtny6	117	26	has	have	VBZ
cord-003571-upogtny6	117	27	had	have	VBN
cord-003571-upogtny6	117	28	repeated	repeat	VBN
cord-003571-upogtny6	117	29	influenza	influenza	NN
cord-003571-upogtny6	117	30	exposures	exposure	NNS
cord-003571-upogtny6	117	31	(	(	-LRB-
cord-003571-upogtny6	117	32	9	9	CD
cord-003571-upogtny6	117	33	,	,	,
cord-003571-upogtny6	117	34	(	(	-LRB-
cord-003571-upogtny6	117	35	18	18	CD
cord-003571-upogtny6	117	36	)	)	-RRB-
cord-003571-upogtny6	117	37	(	(	-LRB-
cord-003571-upogtny6	117	38	19	19	CD
cord-003571-upogtny6	117	39	)	)	-RRB-
cord-003571-upogtny6	117	40	(	(	-LRB-
cord-003571-upogtny6	117	41	20	20	CD
cord-003571-upogtny6	117	42	)	)	-RRB-
cord-003571-upogtny6	117	43	28	28	CD
cord-003571-upogtny6	117	44	)	)	-RRB-
cord-003571-upogtny6	117	45	.	.	.
cord-003571-upogtny6	118	1	It	-PRON-	PRP
cord-003571-upogtny6	118	2	is	be	VBZ
cord-003571-upogtny6	118	3	unclear	unclear	JJ
cord-003571-upogtny6	118	4	whether	whether	IN
cord-003571-upogtny6	118	5	we	-PRON-	PRP
cord-003571-upogtny6	118	6	will	will	MD
cord-003571-upogtny6	118	7	be	be	VB
cord-003571-upogtny6	118	8	able	able	JJ
cord-003571-upogtny6	118	9	to	to	TO
cord-003571-upogtny6	118	10	fully	fully	RB
cord-003571-upogtny6	118	11	understand	understand	VB
cord-003571-upogtny6	118	12	these	these	DT
cord-003571-upogtny6	118	13	interactions	interaction	NNS
cord-003571-upogtny6	118	14	in	in	IN
cord-003571-upogtny6	118	15	the	the	DT
cord-003571-upogtny6	118	16	foreseeable	foreseeable	JJ
cord-003571-upogtny6	118	17	future	future	NN
cord-003571-upogtny6	118	18	;	;	:
cord-003571-upogtny6	118	19	in	in	IN
cord-003571-upogtny6	118	20	the	the	DT
cord-003571-upogtny6	118	21	meantime	meantime	NN
cord-003571-upogtny6	118	22	,	,	,
cord-003571-upogtny6	118	23	population	population	NN
cord-003571-upogtny6	118	24	birth	birth	NN
cord-003571-upogtny6	118	25	cohorts	cohort	NNS
cord-003571-upogtny6	118	26	carrying	carry	VBG
cord-003571-upogtny6	118	27	important	important	JJ
cord-003571-upogtny6	118	28	influenza	influenza	NN
cord-003571-upogtny6	118	29	immune	immune	JJ
cord-003571-upogtny6	118	30	histories	history	NNS
cord-003571-upogtny6	118	31	disappear	disappear	VBP
cord-003571-upogtny6	118	32	.	.	.
cord-003571-upogtny6	119	1	We	-PRON-	PRP
cord-003571-upogtny6	119	2	echo	echo	VBP
cord-003571-upogtny6	119	3	earlier	early	RBR
cord-003571-upogtny6	119	4	calls	call	NNS
cord-003571-upogtny6	119	5	for	for	IN
cord-003571-upogtny6	119	6	a	a	DT
cord-003571-upogtny6	119	7	time	time	NN
cord-003571-upogtny6	119	8	-	-	HYPH
cord-003571-upogtny6	119	9	stamped	stamp	VBN
cord-003571-upogtny6	119	10	global	global	JJ
cord-003571-upogtny6	119	11	repository	repository	NN
cord-003571-upogtny6	119	12	of	of	IN
cord-003571-upogtny6	119	13	human	human	JJ
cord-003571-upogtny6	119	14	sera	sera	NNP
cord-003571-upogtny6	119	15	and	and	CC
cord-003571-upogtny6	119	16	pathogen	pathogen	NN
cord-003571-upogtny6	119	17	specimens	specimen	NNS
cord-003571-upogtny6	119	18	,	,	,
cord-003571-upogtny6	119	19	ideally	ideally	RB
cord-003571-upogtny6	119	20	together	together	RB
cord-003571-upogtny6	119	21	with	with	IN
cord-003571-upogtny6	119	22	epidemiologic	epidemiologic	JJ
cord-003571-upogtny6	119	23	information	information	NN
cord-003571-upogtny6	119	24	(	(	-LRB-
cord-003571-upogtny6	119	25	biobanks	biobank	NNS
cord-003571-upogtny6	119	26	)	)	-RRB-
cord-003571-upogtny6	119	27	for	for	IN
cord-003571-upogtny6	119	28	current	current	JJ
cord-003571-upogtny6	119	29	and	and	CC
cord-003571-upogtny6	119	30	future	future	JJ
cord-003571-upogtny6	119	31	use	use	NN
cord-003571-upogtny6	119	32	(	(	-LRB-
cord-003571-upogtny6	119	33	29	29	CD
cord-003571-upogtny6	119	34	)	)	-RRB-
cord-003571-upogtny6	119	35	.	.	.
cord-003571-upogtny6	120	1	We	-PRON-	PRP
cord-003571-upogtny6	120	2	also	also	RB
cord-003571-upogtny6	120	3	applaud	applaud	VBP
cord-003571-upogtny6	120	4	the	the	DT
cord-003571-upogtny6	120	5	push	push	NN
cord-003571-upogtny6	120	6	by	by	IN
cord-003571-upogtny6	120	7	the	the	DT
cord-003571-upogtny6	120	8	US	US	NNP
cord-003571-upogtny6	120	9	National	National	NNP
cord-003571-upogtny6	120	10	Institute	Institute	NNP
cord-003571-upogtny6	120	11	of	of	IN
cord-003571-upogtny6	120	12	Allergy	Allergy	NNP
cord-003571-upogtny6	120	13	and	and	CC
cord-003571-upogtny6	120	14	Infectious	Infectious	NNP
cord-003571-upogtny6	120	15	Diseases	Diseases	NNPS
cord-003571-upogtny6	120	16	to	to	TO
cord-003571-upogtny6	120	17	fund	fund	VB
cord-003571-upogtny6	120	18	international	international	JJ
cord-003571-upogtny6	120	19	influenza	influenza	NN
cord-003571-upogtny6	120	20	birth	birth	NN
cord-003571-upogtny6	120	21	cohort	cohort	NN
cord-003571-upogtny6	120	22	studies	study	NNS
cord-003571-upogtny6	120	23	and	and	CC
cord-003571-upogtny6	120	24	help	help	VB
cord-003571-upogtny6	120	25	untangle	untangle	VB
cord-003571-upogtny6	120	26	the	the	DT
cord-003571-upogtny6	120	27	complex	complex	JJ
cord-003571-upogtny6	120	28	mechanisms	mechanism	NNS
cord-003571-upogtny6	120	29	of	of	IN
cord-003571-upogtny6	120	30	influenza	influenza	NN
cord-003571-upogtny6	120	31	immunity	immunity	NN
cord-003571-upogtny6	120	32	(	(	-LRB-
cord-003571-upogtny6	120	33	30	30	CD
cord-003571-upogtny6	120	34	)	)	-RRB-
cord-003571-upogtny6	120	35	.	.	.
cord-003571-upogtny6	121	1	If	if	IN
cord-003571-upogtny6	121	2	again	again	RB
cord-003571-upogtny6	121	3	confronted	confront	VBN
cord-003571-upogtny6	121	4	with	with	IN
cord-003571-upogtny6	121	5	a	a	DT
cord-003571-upogtny6	121	6	deadly	deadly	JJ
cord-003571-upogtny6	121	7	flu	flu	NN
cord-003571-upogtny6	121	8	pandemic	pandemic	NN
cord-003571-upogtny6	121	9	,	,	,
cord-003571-upogtny6	121	10	we	-PRON-	PRP
cord-003571-upogtny6	121	11	would	would	MD
cord-003571-upogtny6	121	12	be	be	VB
cord-003571-upogtny6	121	13	in	in	IN
cord-003571-upogtny6	121	14	a	a	DT
cord-003571-upogtny6	121	15	better	well	JJR
cord-003571-upogtny6	121	16	place	place	NN
cord-003571-upogtny6	121	17	than	than	IN
cord-003571-upogtny6	121	18	we	-PRON-	PRP
cord-003571-upogtny6	121	19	were	be	VBD
cord-003571-upogtny6	121	20	in	in	IN
cord-003571-upogtny6	121	21	1918	1918	CD
cord-003571-upogtny6	121	22	because	because	IN
cord-003571-upogtny6	121	23	of	of	IN
cord-003571-upogtny6	121	24	the	the	DT
cord-003571-upogtny6	121	25	availability	availability	NN
cord-003571-upogtny6	121	26	of	of	IN
cord-003571-upogtny6	121	27	drugs	drug	NNS
cord-003571-upogtny6	121	28	,	,	,
cord-003571-upogtny6	121	29	vaccines	vaccine	NNS
cord-003571-upogtny6	121	30	,	,	,
cord-003571-upogtny6	121	31	and	and	CC
cord-003571-upogtny6	121	32	antibiotics	antibiotic	NNS
cord-003571-upogtny6	121	33	and	and	CC
cord-003571-upogtny6	121	34	the	the	DT
cord-003571-upogtny6	121	35	general	general	JJ
cord-003571-upogtny6	121	36	improvements	improvement	NNS
cord-003571-upogtny6	121	37	in	in	IN
cord-003571-upogtny6	121	38	health	health	NN
cord-003571-upogtny6	121	39	and	and	CC
cord-003571-upogtny6	121	40	nutrition	nutrition	NN
cord-003571-upogtny6	121	41	.	.	.
cord-003571-upogtny6	122	1	There	there	EX
cord-003571-upogtny6	122	2	are	be	VBP
cord-003571-upogtny6	122	3	high	high	JJ
cord-003571-upogtny6	122	4	hopes	hope	NNS
cord-003571-upogtny6	122	5	for	for	IN
cord-003571-upogtny6	122	6	the	the	DT
cord-003571-upogtny6	122	7	development	development	NN
cord-003571-upogtny6	122	8	of	of	IN
cord-003571-upogtny6	122	9	universal	universal	JJ
cord-003571-upogtny6	122	10	vaccines	vaccine	NNS
cord-003571-upogtny6	122	11	,	,	,
cord-003571-upogtny6	122	12	but	but	CC
cord-003571-upogtny6	122	13	we	-PRON-	PRP
cord-003571-upogtny6	122	14	need	need	VBP
cord-003571-upogtny6	122	15	to	to	TO
cord-003571-upogtny6	122	16	keep	keep	VB
cord-003571-upogtny6	122	17	in	in	IN
cord-003571-upogtny6	122	18	mind	mind	NN
cord-003571-upogtny6	122	19	that	that	IN
cord-003571-upogtny6	122	20	influenza	influenza	NN
cord-003571-upogtny6	122	21	is	be	VBZ
cord-003571-upogtny6	122	22	a	a	DT
cord-003571-upogtny6	122	23	rapidly	rapidly	RB
cord-003571-upogtny6	122	24	evolving	evolve	VBG
cord-003571-upogtny6	122	25	virus	virus	NN
cord-003571-upogtny6	122	26	that	that	WDT
cord-003571-upogtny6	122	27	has	have	VBZ
cord-003571-upogtny6	122	28	a	a	DT
cord-003571-upogtny6	122	29	large	large	JJ
cord-003571-upogtny6	122	30	and	and	CC
cord-003571-upogtny6	122	31	diverse	diverse	JJ
cord-003571-upogtny6	122	32	animal	animal	NN
cord-003571-upogtny6	122	33	reservoir	reservoir	NN
cord-003571-upogtny6	122	34	and	and	CC
cord-003571-upogtny6	122	35	presumably	presumably	RB
cord-003571-upogtny6	122	36	many	many	JJ
cord-003571-upogtny6	122	37	tricks	trick	NNS
cord-003571-upogtny6	122	38	in	in	IN
cord-003571-upogtny6	122	39	store	store	NN
cord-003571-upogtny6	122	40	.	.	.
cord-003571-upogtny6	123	1	We	-PRON-	PRP
cord-003571-upogtny6	123	2	can	can	MD
cord-003571-upogtny6	123	3	only	only	RB
cord-003571-upogtny6	123	4	anticipate	anticipate	VB
cord-003571-upogtny6	123	5	another	another	DT
cord-003571-upogtny6	123	6	hundred	hundred	CD
cord-003571-upogtny6	123	7	years	year	NNS
cord-003571-upogtny6	123	8	of	of	IN
cord-003571-upogtny6	123	9	very	very	RB
cord-003571-upogtny6	123	10	active	active	JJ
cord-003571-upogtny6	123	11	,	,	,
cord-003571-upogtny6	123	12	and	and	CC
cord-003571-upogtny6	123	13	always	always	RB
cord-003571-upogtny6	123	14	surprising	surprising	JJ
cord-003571-upogtny6	123	15	,	,	,
cord-003571-upogtny6	123	16	influenza	influenza	NN
cord-003571-upogtny6	123	17	research	research	NN
cord-003571-upogtny6	123	18	.	.	.
cord-003571-upogtny6	124	1	Structure	structure	NN
cord-003571-upogtny6	124	2	of	of	IN
cord-003571-upogtny6	124	3	the	the	DT
cord-003571-upogtny6	124	4	uncleaved	uncleaved	JJ
cord-003571-upogtny6	124	5	human	human	JJ
cord-003571-upogtny6	124	6	H1	H1	NNP
cord-003571-upogtny6	124	7	hemagglutinin	hemagglutinin	NN
cord-003571-upogtny6	124	8	from	from	IN
cord-003571-upogtny6	124	9	the	the	DT
cord-003571-upogtny6	124	10	extinct	extinct	JJ
cord-003571-upogtny6	124	11	1918	1918	CD
cord-003571-upogtny6	124	12	influenza	influenza	NN
cord-003571-upogtny6	124	13	virus	virus	NN
cord-003571-upogtny6	124	14	Preliminary	preliminary	JJ
cord-003571-upogtny6	124	15	statistics	statistic	NNS
cord-003571-upogtny6	124	16	of	of	IN
cord-003571-upogtny6	124	17	the	the	DT
cord-003571-upogtny6	124	18	influenza	influenza	NN
cord-003571-upogtny6	124	19	epidemic	epidemic	NN
cord-003571-upogtny6	124	20	Influenza	Influenza	NNP
cord-003571-upogtny6	124	21	transmission	transmission	NN
cord-003571-upogtny6	124	22	in	in	IN
cord-003571-upogtny6	124	23	households	household	NNS
cord-003571-upogtny6	124	24	during	during	IN
cord-003571-upogtny6	124	25	the	the	DT
cord-003571-upogtny6	124	26	1918	1918	CD
cord-003571-upogtny6	124	27	pandemic	pandemic	NN
cord-003571-upogtny6	125	1	The	the	DT
cord-003571-upogtny6	125	2	Great	Great	NNP
cord-003571-upogtny6	125	3	Influenza	Influenza	NNP
cord-003571-upogtny6	125	4	:	:	:
cord-003571-upogtny6	125	5	The	the	DT
cord-003571-upogtny6	125	6	Story	Story	NNP
cord-003571-upogtny6	125	7	of	of	IN
cord-003571-upogtny6	125	8	the	the	DT
cord-003571-upogtny6	125	9	Deadliest	deadly	JJS
cord-003571-upogtny6	125	10	Pandemic	Pandemic	NNP
cord-003571-upogtny6	125	11	in	in	IN
cord-003571-upogtny6	125	12	History	History	NNP
cord-003571-upogtny6	125	13	Origins	Origins	NNPS
cord-003571-upogtny6	125	14	of	of	IN
cord-003571-upogtny6	125	15	the	the	DT
cord-003571-upogtny6	125	16	1918	1918	CD
cord-003571-upogtny6	125	17	pandemic	pandemic	NN
cord-003571-upogtny6	125	18	:	:	:
cord-003571-upogtny6	125	19	revisiting	revisit	VBG
cord-003571-upogtny6	125	20	the	the	DT
cord-003571-upogtny6	125	21	swine	swine	NN
cord-003571-upogtny6	125	22	"	"	``
cord-003571-upogtny6	125	23	mixing	mix	VBG
cord-003571-upogtny6	125	24	vessel	vessel	NN
cord-003571-upogtny6	125	25	"	"	''
cord-003571-upogtny6	125	26	hypothesis	hypothesis	NN
cord-003571-upogtny6	125	27	Loose	loose	JJ
cord-003571-upogtny6	125	28	ends	end	NNS
cord-003571-upogtny6	125	29	in	in	IN
cord-003571-upogtny6	125	30	the	the	DT
cord-003571-upogtny6	125	31	epidemiology	epidemiology	NN
cord-003571-upogtny6	125	32	of	of	IN
cord-003571-upogtny6	125	33	the	the	DT
cord-003571-upogtny6	125	34	1918	1918	CD
cord-003571-upogtny6	125	35	pandemic	pandemic	NN
cord-003571-upogtny6	125	36	:	:	:
cord-003571-upogtny6	125	37	explaining	explain	VBG
cord-003571-upogtny6	125	38	the	the	DT
cord-003571-upogtny6	125	39	extreme	extreme	JJ
cord-003571-upogtny6	125	40	mortality	mortality	NN
cord-003571-upogtny6	125	41	risk	risk	NN
cord-003571-upogtny6	125	42	in	in	IN
cord-003571-upogtny6	125	43	young	young	JJ
cord-003571-upogtny6	125	44	adults	adult	NNS
cord-003571-upogtny6	125	45	Age	age	NN
cord-003571-upogtny6	125	46	-	-	HYPH
cord-003571-upogtny6	125	47	specific	specific	JJ
cord-003571-upogtny6	125	48	excess	excess	JJ
cord-003571-upogtny6	125	49	mortality	mortality	NN
cord-003571-upogtny6	125	50	patterns	pattern	NNS
cord-003571-upogtny6	125	51	during	during	IN
cord-003571-upogtny6	125	52	the	the	DT
cord-003571-upogtny6	125	53	1918	1918	CD
cord-003571-upogtny6	125	54	-	-	SYM
cord-003571-upogtny6	125	55	1920	1920	CD
cord-003571-upogtny6	125	56	influenza	influenza	NN
cord-003571-upogtny6	125	57	pandemic	pandemic	NN
cord-003571-upogtny6	125	58	in	in	IN
cord-003571-upogtny6	125	59	Madrid	Madrid	NNP
cord-003571-upogtny6	125	60	,	,	,
cord-003571-upogtny6	125	61	Spain	Spain	NNP
cord-003571-upogtny6	125	62	Influenza	Influenza	NNP
cord-003571-upogtny6	125	63	in	in	IN
cord-003571-upogtny6	125	64	New	New	NNP
cord-003571-upogtny6	125	65	Zealand	Zealand	NNP
cord-003571-upogtny6	125	66	before	before	IN
cord-003571-upogtny6	125	67	1918	1918	CD
cord-003571-upogtny6	125	68	:	:	:
cord-003571-upogtny6	125	69	a	a	DT
cord-003571-upogtny6	125	70	preliminary	preliminary	JJ
cord-003571-upogtny6	125	71	report	report	NN
cord-003571-upogtny6	125	72	Investigating	investigate	VBG
cord-003571-upogtny6	125	73	the	the	DT
cord-003571-upogtny6	125	74	legacy	legacy	NN
cord-003571-upogtny6	125	75	of	of	IN
cord-003571-upogtny6	125	76	1918	1918	CD
cord-003571-upogtny6	125	77	pandemic	pandemic	NN
cord-003571-upogtny6	125	78	on	on	IN
cord-003571-upogtny6	125	79	age	age	NN
cord-003571-upogtny6	125	80	-	-	HYPH
cord-003571-upogtny6	125	81	related	relate	VBN
cord-003571-upogtny6	125	82	seroepidemiology	seroepidemiology	NN
cord-003571-upogtny6	125	83	and	and	CC
cord-003571-upogtny6	125	84	immune	immune	JJ
cord-003571-upogtny6	125	85	responses	response	NNS
cord-003571-upogtny6	125	86	to	to	IN
cord-003571-upogtny6	125	87	subsequent	subsequent	JJ
cord-003571-upogtny6	125	88	influenza	influenza	NN
cord-003571-upogtny6	125	89	A(H1N1	A(H1N1	NNP
cord-003571-upogtny6	125	90	)	)	-RRB-
cord-003571-upogtny6	125	91	viruses	viruse	VBZ
cord-003571-upogtny6	125	92	through	through	IN
cord-003571-upogtny6	125	93	a	a	DT
cord-003571-upogtny6	125	94	structural	structural	JJ
cord-003571-upogtny6	125	95	equation	equation	NN
cord-003571-upogtny6	125	96	model	model	NN
cord-003571-upogtny6	126	1	The	the	DT
cord-003571-upogtny6	126	2	1918	1918	CD
cord-003571-upogtny6	126	3	-	-	SYM
cord-003571-upogtny6	126	4	1919	1919	CD
cord-003571-upogtny6	126	5	influenza	influenza	NN
cord-003571-upogtny6	126	6	pandemic	pandemic	NN
cord-003571-upogtny6	126	7	in	in	IN
cord-003571-upogtny6	126	8	Portugal	Portugal	NNP
cord-003571-upogtny6	126	9	:	:	:
cord-003571-upogtny6	126	10	a	a	DT
cord-003571-upogtny6	126	11	regional	regional	JJ
cord-003571-upogtny6	126	12	analysis	analysis	NN
cord-003571-upogtny6	126	13	of	of	IN
cord-003571-upogtny6	126	14	death	death	NN
cord-003571-upogtny6	126	15	impact	impact	NN
cord-003571-upogtny6	127	1	Spatiotemporal	spatiotemporal	JJ
cord-003571-upogtny6	127	2	patterns	pattern	NNS
cord-003571-upogtny6	127	3	and	and	CC
cord-003571-upogtny6	127	4	diffusion	diffusion	NN
cord-003571-upogtny6	127	5	of	of	IN
cord-003571-upogtny6	127	6	the	the	DT
cord-003571-upogtny6	127	7	1918	1918	CD
cord-003571-upogtny6	127	8	influenza	influenza	NN
cord-003571-upogtny6	127	9	pandemic	pandemic	NN
cord-003571-upogtny6	127	10	in	in	IN
cord-003571-upogtny6	127	11	British	british	JJ
cord-003571-upogtny6	127	12	India	India	NNP
cord-003571-upogtny6	127	13	Reassessing	reassess	VBG
cord-003571-upogtny6	127	14	the	the	DT
cord-003571-upogtny6	127	15	global	global	JJ
cord-003571-upogtny6	127	16	mortality	mortality	NN
cord-003571-upogtny6	127	17	burden	burden	NN
cord-003571-upogtny6	127	18	of	of	IN
cord-003571-upogtny6	127	19	the	the	DT
cord-003571-upogtny6	127	20	1918	1918	CD
cord-003571-upogtny6	127	21	influenza	influenza	NN
cord-003571-upogtny6	127	22	pandemic	pandemic	JJ
cord-003571-upogtny6	127	23	Social	Social	NNP
cord-003571-upogtny6	127	24	class	class	NN
cord-003571-upogtny6	127	25	and	and	CC
cord-003571-upogtny6	127	26	excess	excess	JJ
cord-003571-upogtny6	127	27	mortality	mortality	NN
cord-003571-upogtny6	127	28	in	in	IN
cord-003571-upogtny6	127	29	Sweden	Sweden	NNP
cord-003571-upogtny6	127	30	during	during	IN
cord-003571-upogtny6	127	31	the	the	DT
cord-003571-upogtny6	127	32	1918	1918	CD
cord-003571-upogtny6	127	33	influenza	influenza	NN
cord-003571-upogtny6	127	34	pandemic	pandemic	JJ
cord-003571-upogtny6	127	35	Natality	Natality	NNP
cord-003571-upogtny6	127	36	decline	decline	NN
cord-003571-upogtny6	127	37	and	and	CC
cord-003571-upogtny6	127	38	spatial	spatial	JJ
cord-003571-upogtny6	127	39	variation	variation	NN
cord-003571-upogtny6	127	40	in	in	IN
cord-003571-upogtny6	127	41	excess	excess	JJ
cord-003571-upogtny6	127	42	death	death	NN
cord-003571-upogtny6	127	43	rates	rate	NNS
cord-003571-upogtny6	127	44	during	during	IN
cord-003571-upogtny6	127	45	the	the	DT
cord-003571-upogtny6	127	46	1918	1918	CD
cord-003571-upogtny6	127	47	-	-	SYM
cord-003571-upogtny6	127	48	1920	1920	CD
cord-003571-upogtny6	127	49	influenza	influenza	NN
cord-003571-upogtny6	127	50	pandemic	pandemic	NN
cord-003571-upogtny6	127	51	in	in	IN
cord-003571-upogtny6	127	52	Arizona	Arizona	NNP
cord-003571-upogtny6	127	53	,	,	,
cord-003571-upogtny6	127	54	United	United	NNP
cord-003571-upogtny6	127	55	States	States	NNP
cord-003571-upogtny6	127	56	Short	Short	NNP
cord-003571-upogtny6	127	57	-	-	HYPH
cord-003571-upogtny6	127	58	term	term	NN
cord-003571-upogtny6	127	59	birth	birth	NN
cord-003571-upogtny6	127	60	sequelae	sequela	NNS
cord-003571-upogtny6	127	61	of	of	IN
cord-003571-upogtny6	127	62	the	the	DT
cord-003571-upogtny6	127	63	1918	1918	CD
cord-003571-upogtny6	127	64	-	-	SYM
cord-003571-upogtny6	127	65	1920	1920	CD
cord-003571-upogtny6	127	66	influenza	influenza	NN
cord-003571-upogtny6	127	67	pandemic	pandemic	NN
cord-003571-upogtny6	127	68	in	in	IN
cord-003571-upogtny6	127	69	the	the	DT
cord-003571-upogtny6	127	70	United	United	NNP
cord-003571-upogtny6	127	71	States	States	NNP
cord-003571-upogtny6	127	72	:	:	:
cord-003571-upogtny6	128	1	state	state	NN
cord-003571-upogtny6	128	2	-	-	HYPH
cord-003571-upogtny6	128	3	level	level	NN
cord-003571-upogtny6	128	4	analysis	analysis	NN
cord-003571-upogtny6	128	5	Readiness	readiness	NN
cord-003571-upogtny6	128	6	for	for	IN
cord-003571-upogtny6	128	7	responding	respond	VBG
cord-003571-upogtny6	128	8	to	to	IN
cord-003571-upogtny6	128	9	a	a	DT
cord-003571-upogtny6	128	10	severe	severe	JJ
cord-003571-upogtny6	128	11	pandemic	pandemic	NN
cord-003571-upogtny6	128	12	100	100	CD
cord-003571-upogtny6	128	13	years	year	NNS
cord-003571-upogtny6	128	14	after	after	IN
cord-003571-upogtny6	128	15	1918	1918	CD
cord-003571-upogtny6	128	16	Universal	Universal	NNP
cord-003571-upogtny6	128	17	influenza	influenza	NN
cord-003571-upogtny6	128	18	vaccines	vaccine	NNS
cord-003571-upogtny6	128	19	:	:	:
cord-003571-upogtny6	128	20	progress	progress	VB
cord-003571-upogtny6	128	21	in	in	IN
cord-003571-upogtny6	128	22	achieving	achieve	VBG
cord-003571-upogtny6	128	23	broad	broad	JJ
cord-003571-upogtny6	128	24	cross	cross	NN
cord-003571-upogtny6	128	25	-	-	NN
cord-003571-upogtny6	128	26	protection	protection	NN
cord-003571-upogtny6	128	27	in	in	IN
cord-003571-upogtny6	128	28	vivo	vivo	NNP
cord-003571-upogtny6	128	29	Potent	potent	JJ
cord-003571-upogtny6	128	30	protection	protection	NN
cord-003571-upogtny6	128	31	against	against	IN
cord-003571-upogtny6	128	32	H5N1	H5N1	NNP
cord-003571-upogtny6	128	33	and	and	CC
cord-003571-upogtny6	128	34	H7N9	H7N9	NNP
cord-003571-upogtny6	128	35	influenza	influenza	NN
cord-003571-upogtny6	128	36	via	via	IN
cord-003571-upogtny6	128	37	childhood	childhood	NN
cord-003571-upogtny6	128	38	hemagglutinin	hemagglutinin	NN
cord-003571-upogtny6	128	39	imprinting	imprinting	NN
cord-003571-upogtny6	128	40	Re	Re	VBG
cord-003571-upogtny6	128	41	-	-	VBG
cord-003571-upogtny6	128	42	examining	examine	VBG
cord-003571-upogtny6	128	43	the	the	DT
cord-003571-upogtny6	128	44	evidence	evidence	NN
cord-003571-upogtny6	128	45	regarding	regard	VBG
cord-003571-upogtny6	128	46	circulation	circulation	NN
cord-003571-upogtny6	128	47	of	of	IN
cord-003571-upogtny6	128	48	a	a	DT
cord-003571-upogtny6	128	49	human	human	JJ
cord-003571-upogtny6	128	50	H1	H1	NNP
cord-003571-upogtny6	128	51	influenza	influenza	NN
cord-003571-upogtny6	128	52	virus	virus	NN
cord-003571-upogtny6	128	53	immediately	immediately	RB
cord-003571-upogtny6	128	54	prior	prior	RB
cord-003571-upogtny6	128	55	to	to	IN
cord-003571-upogtny6	128	56	the	the	DT
cord-003571-upogtny6	128	57	1918	1918	CD
cord-003571-upogtny6	128	58	Spanish	spanish	JJ
cord-003571-upogtny6	128	59	flu	flu	NN
cord-003571-upogtny6	128	60	Age	Age	NNP
cord-003571-upogtny6	128	61	-	-	:
cord-003571-upogtny6	128	62	and	and	CC
cord-003571-upogtny6	128	63	sex	sex	NN
cord-003571-upogtny6	128	64	-	-	HYPH
cord-003571-upogtny6	128	65	specific	specific	JJ
cord-003571-upogtny6	128	66	mortality	mortality	NN
cord-003571-upogtny6	128	67	associated	associate	VBN
cord-003571-upogtny6	128	68	with	with	IN
cord-003571-upogtny6	128	69	the	the	DT
cord-003571-upogtny6	128	70	1918	1918	CD
cord-003571-upogtny6	128	71	-	-	SYM
cord-003571-upogtny6	128	72	1919	1919	CD
cord-003571-upogtny6	128	73	influenza	influenza	NN
cord-003571-upogtny6	128	74	pandemic	pandemic	NN
cord-003571-upogtny6	128	75	in	in	IN
cord-003571-upogtny6	128	76	Kentucky	Kentucky	NNP
cord-003571-upogtny6	128	77	Epidemiological	epidemiological	JJ
cord-003571-upogtny6	128	78	evidence	evidence	NN
cord-003571-upogtny6	128	79	of	of	IN
cord-003571-upogtny6	128	80	an	an	DT
cord-003571-upogtny6	128	81	early	early	JJ
cord-003571-upogtny6	128	82	wave	wave	NN
cord-003571-upogtny6	128	83	of	of	IN
cord-003571-upogtny6	128	84	the	the	DT
cord-003571-upogtny6	128	85	1918	1918	CD
cord-003571-upogtny6	128	86	influenza	influenza	NN
cord-003571-upogtny6	128	87	pandemic	pandemic	NN
cord-003571-upogtny6	128	88	in	in	IN
cord-003571-upogtny6	128	89	New	New	NNP
cord-003571-upogtny6	128	90	York	York	NNP
cord-003571-upogtny6	128	91	City	City	NNP
cord-003571-upogtny6	128	92	Influenza	Influenza	NNP
cord-003571-upogtny6	128	93	epidemics	epidemic	NNS
cord-003571-upogtny6	128	94	in	in	IN
cord-003571-upogtny6	128	95	Iceland	Iceland	NNP
cord-003571-upogtny6	128	96	over	over	IN
cord-003571-upogtny6	128	97	9	9	CD
cord-003571-upogtny6	128	98	decades	decade	NNS
cord-003571-upogtny6	128	99	:	:	:
cord-003571-upogtny6	128	100	changes	change	NNS
cord-003571-upogtny6	128	101	in	in	IN
cord-003571-upogtny6	128	102	timing	timing	NN
cord-003571-upogtny6	128	103	and	and	CC
cord-003571-upogtny6	128	104	synchrony	synchrony	NN
cord-003571-upogtny6	128	105	with	with	IN
cord-003571-upogtny6	128	106	the	the	DT
cord-003571-upogtny6	128	107	United	United	NNP
cord-003571-upogtny6	128	108	States	States	NNP
cord-003571-upogtny6	128	109	and	and	CC
cord-003571-upogtny6	128	110	Europe	Europe	NNP
cord-003571-upogtny6	128	111	Estimation	Estimation	NNP
cord-003571-upogtny6	128	112	of	of	IN
cord-003571-upogtny6	128	113	potential	potential	JJ
cord-003571-upogtny6	128	114	global	global	JJ
cord-003571-upogtny6	128	115	pandemic	pandemic	NN
cord-003571-upogtny6	128	116	influenza	influenza	NN
cord-003571-upogtny6	128	117	mortality	mortality	NN
cord-003571-upogtny6	128	118	on	on	IN
cord-003571-upogtny6	128	119	the	the	DT
cord-003571-upogtny6	128	120	basis	basis	NN
cord-003571-upogtny6	128	121	of	of	IN
cord-003571-upogtny6	128	122	vital	vital	JJ
cord-003571-upogtny6	128	123	registry	registry	NN
cord-003571-upogtny6	128	124	data	datum	NNS
cord-003571-upogtny6	128	125	from	from	IN
cord-003571-upogtny6	128	126	the	the	DT
cord-003571-upogtny6	128	127	1918	1918	CD
cord-003571-upogtny6	128	128	-	-	SYM
cord-003571-upogtny6	128	129	20	20	CD
cord-003571-upogtny6	128	130	pandemic	pandemic	NN
cord-003571-upogtny6	128	131	:	:	:
cord-003571-upogtny6	128	132	a	a	DT
cord-003571-upogtny6	128	133	quantitative	quantitative	JJ
cord-003571-upogtny6	128	134	analysis	analysis	NN
cord-003571-upogtny6	128	135	Global	global	JJ
cord-003571-upogtny6	128	136	mortality	mortality	NN
cord-003571-upogtny6	128	137	estimates	estimate	NNS
cord-003571-upogtny6	128	138	for	for	IN
cord-003571-upogtny6	128	139	the	the	DT
cord-003571-upogtny6	128	140	2009	2009	CD
cord-003571-upogtny6	128	141	influenza	influenza	NN
cord-003571-upogtny6	128	142	pandemic	pandemic	NN
cord-003571-upogtny6	128	143	from	from	IN
cord-003571-upogtny6	128	144	the	the	DT
cord-003571-upogtny6	128	145	GLaMOR	GLaMOR	NNP
cord-003571-upogtny6	128	146	project	project	NN
cord-003571-upogtny6	128	147	:	:	:
cord-003571-upogtny6	129	1	a	a	DT
cord-003571-upogtny6	129	2	modeling	modeling	NN
cord-003571-upogtny6	129	3	study	study	NN
cord-003571-upogtny6	129	4	Natality	Natality	NNP
cord-003571-upogtny6	129	5	decline	decline	NN
cord-003571-upogtny6	129	6	and	and	CC
cord-003571-upogtny6	129	7	miscarriages	miscarriage	NNS
cord-003571-upogtny6	129	8	associated	associate	VBN
cord-003571-upogtny6	129	9	with	with	IN
cord-003571-upogtny6	129	10	the	the	DT
cord-003571-upogtny6	129	11	1918	1918	CD
cord-003571-upogtny6	129	12	influenza	influenza	NN
cord-003571-upogtny6	129	13	pandemic	pandemic	NN
cord-003571-upogtny6	129	14	:	:	:
cord-003571-upogtny6	130	1	the	the	DT
cord-003571-upogtny6	130	2	Scandinavian	scandinavian	JJ
cord-003571-upogtny6	130	3	and	and	CC
cord-003571-upogtny6	130	4	United	United	NNP
cord-003571-upogtny6	130	5	States	States	NNP
cord-003571-upogtny6	130	6	experiences	experience	VBZ
cord-003571-upogtny6	130	7	Transmissibility	Transmissibility	NNP
cord-003571-upogtny6	130	8	and	and	CC
cord-003571-upogtny6	130	9	geographic	geographic	JJ
cord-003571-upogtny6	130	10	spread	spread	NN
cord-003571-upogtny6	130	11	of	of	IN
cord-003571-upogtny6	130	12	the	the	DT
cord-003571-upogtny6	130	13	1889	1889	CD
cord-003571-upogtny6	130	14	influenza	influenza	NN
cord-003571-upogtny6	130	15	pandemic	pandemic	NN
cord-003571-upogtny6	130	16	Age	age	NN
cord-003571-upogtny6	130	17	-	-	HYPH
cord-003571-upogtny6	130	18	specific	specific	JJ
cord-003571-upogtny6	130	19	excess	excess	JJ
cord-003571-upogtny6	130	20	mortality	mortality	NN
cord-003571-upogtny6	130	21	patterns	pattern	NNS
cord-003571-upogtny6	130	22	and	and	CC
cord-003571-upogtny6	130	23	transmissibility	transmissibility	NN
cord-003571-upogtny6	130	24	during	during	IN
cord-003571-upogtny6	130	25	the	the	DT
cord-003571-upogtny6	130	26	1889	1889	CD
cord-003571-upogtny6	130	27	-	-	SYM
cord-003571-upogtny6	130	28	1890	1890	CD
cord-003571-upogtny6	130	29	influenza	influenza	NN
cord-003571-upogtny6	130	30	pandemic	pandemic	NN
cord-003571-upogtny6	130	31	in	in	IN
cord-003571-upogtny6	130	32	Madrid	Madrid	NNP
cord-003571-upogtny6	131	1	,	,	,
cord-003571-upogtny6	131	2	Spain	Spain	NNP
cord-003571-upogtny6	131	3	Evidence	evidence	NN
cord-003571-upogtny6	131	4	for	for	IN
cord-003571-upogtny6	131	5	antigenic	antigenic	JJ
cord-003571-upogtny6	131	6	seniority	seniority	NN
cord-003571-upogtny6	131	7	in	in	IN
cord-003571-upogtny6	131	8	influenza	influenza	NN
cord-003571-upogtny6	131	9	A	a	NN
cord-003571-upogtny6	131	10	(	(	-LRB-
cord-003571-upogtny6	131	11	H3N2	H3N2	NNP
cord-003571-upogtny6	131	12	)	)	-RRB-
cord-003571-upogtny6	131	13	antibody	antibody	NN
cord-003571-upogtny6	131	14	responses	response	NNS
cord-003571-upogtny6	131	15	in	in	IN
cord-003571-upogtny6	131	16	southern	southern	JJ
cord-003571-upogtny6	131	17	China	China	NNP
cord-003571-upogtny6	131	18	Use	Use	NNP
cord-003571-upogtny6	131	19	of	of	IN
cord-003571-upogtny6	131	20	serological	serological	JJ
cord-003571-upogtny6	131	21	surveys	survey	NNS
cord-003571-upogtny6	131	22	to	to	TO
cord-003571-upogtny6	131	23	generate	generate	VB
cord-003571-upogtny6	131	24	key	key	JJ
cord-003571-upogtny6	131	25	insights	insight	NNS
cord-003571-upogtny6	131	26	into	into	IN
cord-003571-upogtny6	131	27	the	the	DT
cord-003571-upogtny6	131	28	changing	change	VBG
cord-003571-upogtny6	131	29	global	global	JJ
cord-003571-upogtny6	131	30	landscape	landscape	NN
cord-003571-upogtny6	131	31	of	of	IN
cord-003571-upogtny6	131	32	infectious	infectious	JJ
cord-003571-upogtny6	131	33	disease	disease	NN
cord-003571-upogtny6	132	1	The	the	DT
cord-003571-upogtny6	132	2	ghost	ghost	NN
cord-003571-upogtny6	132	3	of	of	IN
cord-003571-upogtny6	132	4	influenza	influenza	NN
cord-003571-upogtny6	132	5	past	past	NN
cord-003571-upogtny6	132	6	and	and	CC
cord-003571-upogtny6	132	7	the	the	DT
cord-003571-upogtny6	132	8	hunt	hunt	NN
cord-003571-upogtny6	132	9	for	for	IN
cord-003571-upogtny6	132	10	a	a	DT
cord-003571-upogtny6	132	11	universal	universal	JJ
cord-003571-upogtny6	132	12	vaccine	vaccine	NN
cord-003571-upogtny6	132	13	This	this	DT
cord-003571-upogtny6	132	14	article	article	NN
cord-003571-upogtny6	132	15	does	do	VBZ
cord-003571-upogtny6	132	16	not	not	RB
cord-003571-upogtny6	132	17	necessarily	necessarily	RB
cord-003571-upogtny6	132	18	represent	represent	VB
cord-003571-upogtny6	132	19	the	the	DT
cord-003571-upogtny6	132	20	views	view	NNS
cord-003571-upogtny6	132	21	of	of	IN
cord-003571-upogtny6	132	22	the	the	DT
cord-003571-upogtny6	132	23	National	National	NNP
cord-003571-upogtny6	132	24	Institutes	Institutes	NNPS
cord-003571-upogtny6	132	25	of	of	IN
cord-003571-upogtny6	132	26	Health	Health	NNP
cord-003571-upogtny6	132	27	or	or	CC
cord-003571-upogtny6	132	28	the	the	DT
cord-003571-upogtny6	132	29	US	US	NNP
cord-003571-upogtny6	132	30	government	government	NN
cord-003571-upogtny6	132	31	.	.	.
cord-003571-upogtny6	133	1	Conflict	conflict	NN
cord-003571-upogtny6	133	2	of	of	IN
cord-003571-upogtny6	133	3	interest	interest	NN
cord-003571-upogtny6	133	4	:	:	:
cord-003571-upogtny6	133	5	none	none	NN
cord-003571-upogtny6	133	6	declared	declare	VBD
cord-003571-upogtny6	133	7	.	.	.