id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-328683-zvabpty9	Fontanet, A.	SARS-CoV-2 infection in primary schools in northern France: A retrospective cohort study in an area of high transmission	2020-06-29		.txt	text/plain	4046	224	56	Methods: Between 28-30 April 2020, a retrospective cohort study was conducted among pupils, their parents and relatives, and staff of primary schools exposed to SARS-CoV-2 in February and March 2020 in a city north of Paris, France. Seroepidemiological studies are thus needed to determine the extent of infection in children and to decipher the role they may play in transmission To our knowledge, the number of SARS-CoV-2 secondary transmissions in school setting documented in scientific literature is limited, with very few or no secondary cases in investigations in . The epidemic curve, based on symptoms experienced by participants with SARS-CoV-2 antibodies, had no specific pattern, and transmission does not appear to have been impacted by the closure of schools for holidays on February 14 (end of week 7) ( Figure 2A ). They differ however from the results of the study performed in the high school of the same city in France, in which 38% of pupils, 43% of teaching staff and 59% of nonteaching staff who participated in the investigation had anti-SARS-CoV-2 antibodies 27 .	./cache/cord-328683-zvabpty9.txt	./txt/cord-328683-zvabpty9.txt