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Vaccine protection waned this spring but boosters helped, the C.D.C. reports.

By BY BENJAMIN MUELLER from NYT Health https://ift.tt/BA28ORI
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Vaccine protection waned this spring but boosters helped, the C.D.C. reports.

Vaccine protection waned this spring but boosters helped, the C.D.C. reports.

Reviewed by news100 on 4:05 PM Rating: 5

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