id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-275846-7onenxg7	Kamikubo, Yasuhiko	Epidemiological Tools that Predict Partial Herd Immunity to SARS Coronavirus 2	2020-03-27		.txt	text/plain	2302	150	62	Here we present epidemiological evidence that SARS-CoV-2 S type exited Wuhan or other epicenters in China earlier than L type and conferred partial resistance to the virus on infected populations. Here we present epidemiological evidence that SARS-CoV-2 S type exited Wuhan or other epicenters in China earlier than L type and conferred partial resistance to the virus on infected populations. Here, we developed the world's first influenza-based epidemiological method as a useful proxy to detect the spread of SARS-CoV-2 and the establishment of partial herd immunity in countries. These results prompted us to hypothesize that (i) S type SARS-CoV-2 exit Wuhan or other epicenter in China earlier than L type virus without recognition by infectious disease surveillance systems of China and other countries; (ii) the infection by S type induced herd immunity that provides at least partial protection against spread of SARS-CoV-2.	./cache/cord-275846-7onenxg7.txt	./txt/cord-275846-7onenxg7.txt