This article is 4 years old
Distancing and masks cut Covid-19 risk, says largest review of evidence
Keeping at least one metre apart and wearing face masks and eye protection are the best ways to cut the risk of Covid-19 infection, according to the largest review to date of studies on coronavirus disease transmission.
In a review that pooled evidence from 172 studies in 16 countries, researchers found frequent handwashing and good hygiene are also critical - though even all those measures combined can not give full protection.
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