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The Biggest Unanswered Questions About a Covid-19 Vaccine

The Biggest Unanswered Questions About a Covid-19 Vaccine
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A vaccine for the coronavirus that causes covid-19 appears to be our best strategy to ending the current pandemic. Unfortunately, the fastest time frame in which scientists have managed to create any vaccine in history was four years, and there’s already plenty of skepticism surrounding the safety, availability, and…

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