COVID-19 английский => русский Медицина Медицина: Фармацевтика

Why does OHA recommend masks and face coverings over face shields?
While face shields can be very good at blocking droplets that individuals release when they talk, sing, sneeze and cough, they are not as effective at limiting the release of aerosols that can go around the shield.
Masks and face coverings, when correctly worn, fitting snugly over the nose and mouth and hooking under the chin, are more effective at blocking the release of aerosols.