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A comment on Amazon refuses to sell book on Covid-19 and lockdowns. Parent comment
What? Medical personnel regularly utilize surgical masks against respiratory viruses spread by droplets successfully.
They're less useful against aerosolized stuff like measles, but SARS-CoV-2 is primarily spread via droplet.
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What? Medical personnel regularly utilize surgical masks against respiratory viruses spread by droplets successfully.
They're less useful against aerosolized stuff like measles, but SARS-CoV-2 is primarily spread via droplet.