Drop in COVID Vaccine Effectiveness Suggests Need for Boosters

Moderna vaccine was consistently more effective than Pfizer in an older group of U.S. veterans.

Landwebs Landwebs
Dec 13, 2021 - 08:00
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Drop in COVID Vaccine Effectiveness Suggests Need for Boosters
photo of vaccine

Moderna vaccine was consistently more effective than Pfizer in an older group of U.S. veterans.

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