Vaccine Effectiveness Against Infection May Wane, C.D.C. Studies Find Federal health officials said the new data justified a campaign of booster shots. But some scientists disagreed, saying not every American needs another dose. https://ift.tt/2XidLiy https://nyti.ms/3eyQv5F

Federal health officials said the new data justified a campaign of booster shots. But some scientists disagreed, saying not every American needs another dose.

from NYT > Top Stories https://nyti.ms/2UsnlAE
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