Multiple lines of scientific evidence confirm that masks work. Whether you prefer physics, occupational health data, lab-based studies, behavioral data, or if you’re into epi, science has you covered.https://twitter.com/apoorva_nyc/status/1330287178639962112 …
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Replying to @j_g_allen
The Kansas natural experiment is among the best I've seen. Look at what was happening before the mandate: really adds to plausibility it's not just confounding.
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Replying to @beenwrekt @j_g_allen
Right, all such studies are confounded but look at the trends right before the mandate which suggest this isn't just pre-existing behavioral difference. This one is different than most I've seen, and I'm fairly skeptical of ecological studies on masks.
2:42 PM - 22 Nov 2020
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