The results are clear, surgical masks are superior
>Respiratory virus shedding in exhaled breath and efficacy of face masks
Full story of excerpts below at Source: >Scientists Test Which Masks Work Best by Filming People Coughing And Sneezing in Them
A surgical mask was the most effective at blocking droplets and aerosols from talking, coughing and sneezing. But if you can’t get hold of one, a cloth mask is the next best thing, and the more layers the better.
We confirmed that even speaking generates substantial droplets. Coughing and sneezing (in that order) generate even more.
In practice, we don’t yet know which has a greater effect — wearing masks to prevent infected people spreading to others or protecting well people from inhaling infected aerosols. Probably both are equally important.
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