COVID-19

A mask cuts your COVID-19 risk by 65%, experts say

Dean Blumberg, chief of pediatric infectious diseases at the University of California and William Ristenpart, a professor of chemical engineering have recently spoken out about the importance of masks. Image: REUTERS/Toby Melville

Rick Kushman

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New research on masks shows that the risk of infection to the wearer decreases by 65%. Image: The Lancet
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