Coronavirus (Covid-19) vaccine latest update: Sinovac 99% sure of vaccine efficacy; Moderna’s clinical trial enters 2nd phase

Coronavirus (Covid-19) vaccine latest update: Sinovac 99% sure of vaccine efficacy; Moderna’s clinical trial enters 2nd phase

Coronavirus (Covid-19) vaccine latest update: In this photo released by Nucleus Network/ABC, clinical trial participants are given a coronavirus vaccine in Melbourne, Australia. (AP)Coronavirus (Covi…
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