COVID-19 Vaccine Breakthrough Infections Reported to CDC - United States, January 1-April 30, 2021

As of April 30, 2021, approximately 101 million people in the U.S. had been fully vaccinated against COVID-19. Almost 10,300 COVID-19 vaccine breakthrough infections were reported from 46 states and territories. Vaccine breakthrough infections occur in only a small fraction of all vaccinated people.

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