Masks reduce Covid risk in half, a new study shows
Donning a face mask more than halves the risk of getting Covid, according to a review of eight studies published in the British Medical Journal. So does hand-washing. Physical distancing, meantime, cuts the risk by a quarter. The findings come amid evidence that vaccination efforts weren't enough to prevent a resurgence as temperatures drop and people crowd indoors, forcing countries...
Donning a face mask more than halves the risk of getting Covid, according to a review of eight studies published in the British Medical Journal. So does hand-washing. Physical distancing, meantime, cuts the risk by a quarter.
The findings come amid evidence that vaccination efforts weren't enough to prevent a resurgence as temperatures drop and people crowd indoors, forcing countries including Austria and the Netherlands to introduce curbs.
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