17/ I heard interesting new theory by ID expert Monica Gandhi @UCSF: wearing masks may not only prevent disease, but – if wearer does get infected – it may be with a lower viral dose and thus cause milder disease. Some support for this from studies in mice & hamsters (below)… pic.twitter.com/ISqtKK97ow
— Bob Wachter (@Bob_Wachter) July 11, 2020
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