Face Masks Block Expired Particles, Despite Leakage | UC Davis - discu.eu

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Face masks are effective in blocking expired airborne particles from talking and coughing even if they don't seal around the edges, a new study shows https://www.ucdavis.edu/news/facemasks-block-expired-particles-despite-leakage 1863 comments 8/6/2021 science

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Comparing Face Coverings in Controlling Expired Particles | UC Davis https://www.ucdavis.edu/news/comparing-face-coverings-controlling-expired-particles 480 comments

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