Masks and face coverings are no longer compulsory in most public places but the it is still recommended in crowded places
So what does the evidence show about the effect of masks and what happens when they're no longer compulsory?
A large body of evidence suggests wearing a mask or face covering can reduce the risk of transmitting coronavirus
Various studies have used high-speed cameras to show they can block most of the potentially virus-laden particles coming out of people's mouths when they breathe, speak and sing
One review of six studies estimated mask-wearing reduced the risk of catching Covid by 60%, and 70% among healthcare staff
But one person wearing a mask does not protect them as much as if all the people around them are wearing masks
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