‘Grim’ Virus Discoveries in Colorado and California Alarm Scientists

By BY APOORVA MANDAVILLI from NYT Health https://ift.tt/3rJb72e

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C.D.C. warns against second vaccine shots for those who have allergic reactions the first time.

By BY RONI CARYN RABIN from NYT Health https://ift.tt/380uWur

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Warp Speed Officials Say Covid Vaccine Distribution Is Going Too Slowly

By BY REBECCA ROBBINS from NYT Health https://ift.tt/3oeKiRL

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How the Sinopharm Vaccine Works

By BY JONATHAN CORUM AND CARL ZIMMER from NYT Health https://ift.tt/3o7CS2E

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How the Novavax Vaccine Works

By BY JONATHAN CORUM AND CARL ZIMMER from NYT Health https://ift.tt/2Ju9iFc

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