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Herd immunity. The idea is that enough people become immune to an infectious disease that is no longer contagious. It makes sense in theory. But as NPR’s Geoff Brumfiel told us, in fact, in this pandemic of coronavirus, it’s potentially risky and probably unattainable.
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This volume was produced by Abby Wendle, fact-verified Berly McCoy and edited by Viet Le.