​​ Protection against Omicron by a Fourth Vaccine Dose In Is | UPDATES IN MEDICINE

​​ Protection against Omicron by a Fourth Vaccine Dose

In Israel, the use of a fourth dose of BNT162b2 vaccine was initiated on January 3, 2022. As of February 18, a fourth dose produced a 45% reduction in the incidence of infection, a 55% reduction in symptomatic infection, a 68% reduction in hospitalization, and a 74% reduction in Covid-19–related death 7 to 30 days after vaccination.


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