Coronavirus FAQ: Why Am I Suddenly Hearing So Much About KF94 Masks?

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South Korea’s KF94 mask does a good job concealing Mona Lisa’s smile — but how effective is it at preventing coronavirus spread? Above: masked pedestrians in a shopping district in Seoul.





Chung Sung-Jun/Getty Images



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Chung Sung-Jun/Getty Images



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Pranav Baskar is a freelance journalist who regularly answers coronavirus FAQs for NPR.

• KF-94 masks


• face masks


• COVID-19


• pandemic


• coronavirus


• South Korea