Biden Officials Now Expect Vulnerable Americans to Need Booster Shots The growing consensus that at least some Americans will need a booster is partly tied to research suggesting that Pfizer’s vaccine is less effective after about six months. https://ift.tt/2XidLiy https://nyti.ms/3eyQv5F

The growing consensus that at least some Americans will need a booster is partly tied to research suggesting that Pfizer’s vaccine is less effective after about six months.

from NYT > Top Stories https://nyti.ms/3eQziHq
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