One study doesn't end all discussions but I'll take one shoe-leather epidemiology work like it over all the slick computer-generated simulations. This isn't vaporware, it's real. One restaurant, one asymptomatic person, only 11 in line of A/C out of 93 infected. Real data for us.
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*91
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zeynep tufekci Retweeted GinFuelledCassandra 💙
Sadly, I don't think we can safely open indoor restaurants. The good news is one asymptomatic person did *not* infect 81 people in that restaurant. The bad news is *one* asymptomatic person infected ten people in line of air flow. No fever, can't screen.https://twitter.com/LadyBrienne1/status/1251853128498057218?s=20 …
zeynep tufekci added,
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People asking me questions: Study above strengthens case for masks. I try to read key papers. Still many unknowns. PERSONALLY, (not advice, just me!) I try to avoid spending time indoors with others. I feel increasingly comfortable outdoors. I wash my hands after opening boxes.
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We now know *for sure* mass transmission is possible indoors even without coughing/sneezing (pre/asymptomatic). We should all wear masks. I'm not yet seeing many cases of outdoors/surfaces but we should STILL be careful while we wait for studies. Absence of evidence isn't proof.
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Also, please note that coughing/sneezing are game changers to the distances we have all been told—especially sneezing—and that's another big reason to recommend universal masks, especially indoors. Many unknowns remain but this we know for sure: CROWDED INDOORS ARE HIGH RISK.
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zeynep tufekci Retweeted Justin Gray
Georgia is considering opening retail, restaurants, nail salons, in-person worship and other indoor places next week. Please feel free to share the study on top of this thread with your friends there: one asymptomatic person in a restaurant infected 10.https://twitter.com/JustinGrayWSB/status/1252330712092590080 …
zeynep tufekci added,
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Check this example flagged by
@jeremyphoward in his super useful FAQ on masks. *94* out of 97 cases in a building worked on the same floor! It really suggests transmission through air is much more important than surfaces like elevator/doorknobs. Mask up! https://www.fast.ai/2020/04/20/skeptics-masks/ …pic.twitter.com/XVF9WeJbig
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Replying to @zeynep @jeremyphoward
Well...that's obviously highly plausible, but couldn't this equally well be explained by surface tramsmission (from a shared water-cooler or whathaveyou) on this particular floor?
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Yup. Or even just the 11th floor button in the elevator.
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One button infected 94 people???
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Seems inconsistent. Everybody needs to go back to the Lobby floor.
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Who all work on one side of the floor?
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