Coronavirus face masks Q&A: Is the advice changing?

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MANY health authorities, previously discouraged the public from wearing masks to avoid COVID-19. However, emerging evidence has caused the World Healt...

It can be difficult to keep up with the changing advice. Gengwit Wattakawigran/ Shutterstockhealth authorities, previously discouraged the public from wearing masks to avoid COVID-19. However, emerging evidence has caused the World Health Organization, the US Centers for Disease Control and Prevention , and the UK government to reconsider whether the public should wear masks. There are of course different types of face masks, and we are mainly considering disposable surgical masks.

Other forms of evidence from studies in community settings do suggest that mask-wearers had somewhat fewer respiratory infections than those who didn’t wear masks. However, even taking these many different variables into account, our review found evidence that masks can be most protective for those at higher risk of infection when worn for short periods of time.So far, the official answer in the UK, for example, has been no.

With this evidence, arguments against everyone wearing masks in public are looking less certain. Countries that previously recommended against wearing face masks in public are changing their minds. Based on current evidence, the use of face masks more widely by the public is justified. Wearing masks in public is most beneficial in situations where you can’t properly keep your distance from other people. Wearing masks on crowded public transport is likely to be beneficial – but won’t have any protective effect while walking through deserted streets or in the countryside.Mask wearing can have its own problems.

 

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