4/ b) Ballistic drops (HT @Don_Milton, analogy to rain drops) fall to ground quickly. These are WHO’s “droplets” fall in 1-2 m, 1-2 sec (graph). Can infect by impacting on eyes, nostrils, mouth. No direct evidence, but definitely possible. What fraction? Keep reading.
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Broadly speaking, I think this is where the basic scientists and epidemiologists are coming into conflict. Saying "this is how aerosols work!" is meaningless if you don't engage in contact tracing investigations looking at how the virus ~actually spreads~
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For example, if there was substantial aerosol spread from particles hanging around in the air, we'd expect a large proportion of cases that cannot be traced back to a specific case Instead, we find exactly the opposite!
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They said they didn't share music? If it's the choir I've read about, anyway. I think aerosols as the result of singing seems plausible. But the line is a bit arbitrary. This does not suggest hours later in empty large room *likely* a risk
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Totally agree with that. We call it opportunistic airborne, not so contagious, we have to "help" the virus with long time, low ventilation, no masks, talking
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