https://ift.tt/36lyTbO https://ift.tt/eA8V8J January 29, 2021 at 05:59AM https://www.ndtv.comUS biotech firm Novavax said Thursday its two-shot Covid-19 vaccine showed an overall efficacy of 89.3 percent in a major Phase 3 clinical trial in Britain, and remained highly effective against a...
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