id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-295864-kwdvais7	Flahault, Antoine	Has China faced only a herald wave of SARS-CoV-2?	2020-03-27		.txt	text/plain	271	24	63	key: cord-295864-kwdvais7 journal: The Lancet cord_uid: kwdvais7 Serosurveys should be seen as polls before elections; they can be repeated several times, 3 week after week, to monitor the epidemic precisely. There is no reason to wait for the end of the epidemic before doing serosurveys. The results would be tremendously informative to China, first and foremost, and to the entire international community, on the risk of big secondary epidemic waves. The attack rate of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) calculated by mathe matical models, from estimates of the basic reproduction number, R0, of 2-3, suggests that 50-60% of the population should eventually be infected because the population seems to be entirely naive to the new virus. COVID-19) advice for the public Director-General's opening remarks at the media briefing on COVID-19 -28 A WHO-UNICEF-Lancet Commission	./cache/cord-295864-kwdvais7.txt	./txt/cord-295864-kwdvais7.txt