Covid19
Experts predicted a winter surge of COVID-19. Why haven't we seen one in Allegheny County?
Allegheny County has yet to see a winter surge of COVID-19. This is due to herd immunity, created by prior infections, vaccines, and boosters.
Allegheny County has yet to see a winter surge of COVID-19. This is due to herd immunity, created by prior infections, vaccines, and boosters.
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