People Should Keep Wearing Masks in Public, W.H.O. Officials Say [Archive] - Calgaryn.com

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04-20-2022, 07:09 PM

Masks have been proven to be highly effective at reducing coronavirus transmission when used properly, according to the W.H.O.

More... (https://www.nytimes.com/2022/04/20/world/covid-masks-who.html)