id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-274852-84m62t4x	Hogan, Catherine A.	Retrospective Screening for SARS-CoV-2 RNA in California, USA, Late 2019	2020-10-17		.txt	text/plain	1083	62	46	To investigate the possibility of earlier cases of severe acute respiratory syndrome coronavirus 2 infection than previously recognized, we retrospectively tested pooled samples from 1,700 persons with respiratory signs/symptoms seen at Stanford Health Care, Palo Alto, California, USA, during the last 2 months of 2019. The study period corresponded to the onset of the 2019-2020 respiratory virus season, during which the number of cases of influenza A, influenza B, and respiratory syncytial virus increased and the frequency To investigate the possibility of earlier cases of severe acute respiratory syndrome coronavirus 2 infection than previously recognized, we retrospectively tested pooled samples from 1,700 persons with respiratory signs/symptoms seen at Stanford Health Care, Palo Alto, California, USA, during the last 2 months of 2019. Our pooled screening strategy for investigating local community transmission of SARS-CoV-2 in the San Francisco Bay area of California during late 2019 during the onset of the respiratory virus season identified no COVID-19 cases.	./cache/cord-274852-84m62t4x.txt	./txt/cord-274852-84m62t4x.txt