COVID-19 prevention: WHO recommends wearing masks indoors if ventilation is poor

The World Health Organization recommended wearing face masks when indoors with other people, if the ventilation has been deemed inadequate. In its beefed-up guidance, WHO advised that the general public should wear a non-medical mask in indoor (eg shops, shared workplaces, schools) or outdoor settings where physical distancing of at least one metre cannot be maintained. The WHO also recommended wearing masks if a visitor outside your household came to your home.

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