Why It’ll Take More Than One Vaccine to Beat COVID-19

Multiple vaccines might be necessary to account for variations in effectiveness and how well they protect different populations of people.

By Leslie Nemo
Sep 11, 2020 11:00 PMNov 3, 2020 4:46 PM
Vaccine Injection - Shutterstock
(Credit: REDPIXEL.PL/Shutterstock)

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In the rush of the COVID-19 vaccine “race,” it’s easy to forget one important detail: There might be several winners. 

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