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Researchers in Mexico have made a nose-only Covid mask, which they say reduces the risk of infection of coronavirus during eating and talking. pic.twitter.com/ArUEGZaJj3— CBS News (@CBSNews) March 24, 2021
Researchers in Mexico have made a nose-only Covid mask, which they say reduces the risk of infection of coronavirus during eating and talking. pic.twitter.com/ArUEGZaJj3