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Vaccination offers more protection against Covid than prior infection, a C.D.C. study suggests.

Vaccination offers more protection against Covid than prior infection, a C.D.C. study suggests.
By Benjamin Mueller from NYT Health https://ift.tt/3ButRWW
Coronavirus (2019-nCoV), Vaccination and Immunization, Centers for Disease Control and Prevention, Walensky, Rochelle

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