Who has the most persuasive data showing masks work to control coronavirus? NOT CREDIBLE: Lab-only tests POSSIBLY CREDIBLE: Comparing locations by mask policies (Watch how many lab-only tests I get anyway.)
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You'll get a kick out of this graph, also from the CDC. https://www.cdc.gov/niosh/topics/aerosols/pdfs/aerosol_101.pdf …pic.twitter.com/b8fPY0nPo6
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Viruses don't travel alone
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