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Home » Pfizer Vaccine Infection Efficacy Wanes, But Protection Against Hospitalization Stays Strong
Pfizer Vaccine Infection Efficacy Wanes, But Protection Against Hospitalization Stays Strong
Although efficacy of the Pfizer vaccine against nonDelta COVID-19 infection dropped from 97 percent to 67 percent after five months, its protection against COVID-19 hospital admission — including admissions with Delta variant illness — remained high, according to a large database study published this week in The Lancet.