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NPR Coronavirus Updates

Moderna Finds COVID-19 Vaccine Still Protects Against Emerging Strains

By Bill Chappell

Published January 25, 2021 at 10:38 AM MST

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In a new round of tests, the drug company wants to see if booster doses of its vaccine will ramp up defenses against emerging strains of the coronavirus.

NPR Coronavirus Updates

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Bill Chappell

Bill Chappell is a writer and editor on the News Desk in the heart of NPR's newsroom in Washington, D.C.

See stories by Bill Chappell