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

The World Health Organization tightened guidelines on wearing face masks, recommending that, where COVID-19 is spreading, masks should be worn by everyone in health-care facilities and for all interactions in poorly ventilated indoor spaces.

source https://www.cbc.ca/news/health/covid-19-masks-who-1.5824929?cmp=rss