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A comment on What's the point of a Covid-19 test that takes 19 days for results?. Parent comment

Re:What's the point of a Covid-19 test that takes 19 days fo... by matwood on Saturday July 25, 2020 @11:15PM (#23954146)
Correct. It was always said if someone was sick they should wear a mask (more studies have come out confirming this). Once asymptomatic became such a big transmission vector it made sense for everyone to wear a mask. PPE was/is still an issue, so cloth masks were also questionable early on, but have since shown effectiveness.

https://jamanetwork.com/journals/jama/fullarticle/2768532

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