How Herd Immunity Works — And What Stands In Its Way

Model of how vaccination rates effect infection rates.

Scientists say the pandemic will only end in the U.S. when we achieve what's called herd immunity. Play with our simulations to see how immunity can stop an outbreak in its tracks.

(Image credit: NPR)

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source https://www.npr.org/sections/health-shots/2021/02/18/967462483/how-herd-immunity-works-and-what-stands-in-its-way

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