US Vaccine Candidate Heads To Widespread Testing In People
A COVID-19 vaccine candidate developed by the US company Moderna and the National Institutes of Health starts its final phase of testing today. It's one of a handful of candidates to reach this stage.
Đọc thêm tại NPR
at July 27, 2020 at 07:30PM
Health & Science
Thứ Hai, 27 tháng 7, 2020
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