Many of us aren’t wearing masks correctly, and that reduces efficacy by quite a lot. Gaps, diaph

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Many of us aren’t wearing masks correctly, and that reduces efficacy by quite a lot.

Gaps, diaphanous cloth masks, scarves doing double-duty – all allow aerosols to penetrate or escape from them

 Many of us aren’t wearing masks correctly, and that reduces efficacy by quite a lot.Gaps, diaph

Source: Bloomberg Markets

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