2 Companies Say Their Vaccines Are 95% Effective. What Does That Mean?

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By BY CARL ZIMMER from NYT Health https://ift.tt/2Kt3KuT
via IFTTT Clinical Trials, Vaccination and Immunization, Coronavirus (2019-nCoV), Placebos, your-feed-science, your-feed-healthcare You might assume that 95 out of every 100 people vaccinated will be protected from Covid-19. But that’s not how the math works.

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