Face mask effectiveness: What science knows now
GoodbyeBlueMonday @ GoodbyeBlueMonday @startrek.website Posts 0Comments 134Joined 2 yr. ago
GoodbyeBlueMonday @ GoodbyeBlueMonday @startrek.website
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Initially the CDC didn't know how much asymptomatic spread was going to be a factor: that definitely changes the math on advising everyone to mask up. By July of 2020 they were unequivocal: https://www.cdc.gov/media/releases/2020/p0714-americans-to-wear-masks.html