Eight key questions on the Danish facemask study
The ‘Danmask-19 trial‘ sought to test whether face masks are effective in preventing infection with SARS-CoV-2 (the virus that causes Covid-19) for the wearer. It found that the recommendation to wear surgical masks to supplement other public health measures ‘did not reduce the SARS-CoV-2 infection rate among wearers by more than half in a community’. So does
