Thứ Bảy, 9 tháng 5, 2020

NPR News: These Scientists Are On A Quest To Understand How Prevalent Coronavirus Is

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These Scientists Are On A Quest To Understand How Prevalent Coronavirus Is
A team of scientists at Oregon State University are trying to measure the true prevalence of the coronavirus in Corvallis, Ore., by taking a random sample of the population.

Đọc thêm tại NPR
at May 9, 2020 at 06:59PM
Health & Science
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