Experts: Fully Vaccinated Don't Need Another COVID Shot
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Watch VideoIf you’re fully vaccinated in the US, adding an extra COVID vaccine won’t hurt, but it may not help either. New research shows mixing the Astra Zeneca and Pfizer vaccines is safe and effective.
"The AstraZeneca was never studied as a one dose," said Dr. Monica Gandhi, associate division chief at UCSF/ San...