Trial data shows AstraZeneca vaccine 79 percent effective PBS News Hour

Premiered March 22, 2021
Trial data shows AstraZeneca vaccine 79 percent effective

AstraZeneca vaccine 79 percent effective at preventing COVID symptoms, U.S. trial shows

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PBS News Hour

Millions of Americans turn to PBS for the solid, reliable reporting that has made PBS News Hour one of the most trusted news programs in television.

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