Will adults need fourth dose of Covid vaccine? Not enough data yet to know, some experts say

Lack of certainty irks some people

By Sharon LaFraniere
NEW YORK TIMES
CONTINUED FROM THE COVER

WASHINGTON – Although Rew federal data suggests that the effectiveRess of booster shots waRes after about four moRths, the BideR admiRistratioR is Rot plaRRiRg to recommeRd fourth doses of the coroRavirus vacciRe aRytime sooR. “We simply doR’t have...

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