Pfizer Vaccine Protection Wanes, C.D.C. Study Shows The study found that the shots’ effectiveness in preventing hospitalization fell to 77 percent from 91 percent four months after full vaccination.
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2024. Április 26. Ervin napja van
2024. Április 26. Ervin napja van
Pfizer Vaccine Protection Wanes, C.D.C. Study Shows The study found that the shots’ effectiveness in preventing hospitalization fell to 77 percent from 91 percent four months after full vaccination.
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