Coronavirus live news: Two masks 'substantially reduce' exposure; Italy to reopen ski resorts

A woman wearing a face mask walks next to a painted wall in Bogota. A US study says wearing two masks can reduce Covid exposure. Photograph: Raúl Arboleda/AFP/Getty Images

source https://www.theguardian.com/world/live/2021/feb/11/coronavirus-live-news-two-masks-substantially-reduce-exposure-italy-to-reopen-ski-resorts