The World Health Organization on Wednesday tightened guidelines on wearing face masks, recommending that, where COVID-19 is spreading, they be worn by everyone in health-care facilities and for all interactions in poorly ventilated indoor spaces. In June, the WHO urged governments to ask everyone to wear fabric masks in indoor and outdoor public areas where there was a risk of transmission of the virus. Since then, a second global wave of the epidemic has gathered pace. In all, more than 63 million people globally have caught COVID-19 and 1.475 million have died of it, according to a Reuters tally.

WHO updates mask advice, recommending they be worn in indoor, poorly ventilated areas

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