🤷🏻♀️ Retweeted Ben Cowling
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Ben CowlingVerified account @bencowling88
(1/2) New study just out, face masks effective for source control against influenza and seasonal coronaviruses, even reducing virus detection in aerosols in patients with coronavirus infections. 5 years of hard work to generate the data https://www.nature.com/articles/s41591-020-0843-2 …
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