December 1, 2020

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The Real Time News

Two companies say their COVID-19 vaccines are 95% effective. What does that mean?

It#39;s possible that the effectiveness of coronavirus vaccines will match their impressive efficacy in clinical trials. But if previous vaccines are any guide, effectiveness may prove somewhat lower. ...

Two companies say their COVID-19 vaccines are 95% effective. What does that mean? It#39;s possible that the effectiveness of coronavirus vaccines will match their impressive efficacy in clinical trials. But if previous vaccines are any guide, effectiveness may prove somewhat lower.

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