Coronavirus: How Well Do Face Masks Protect Against Viruses, Droplets and Dust?

EcoWatch
By Deutsche WelleFeb 9, 2020, 4:00 pm151 pts
By Fabian Schmidt The simple mouth and nose protector — a mask made of a rather thin paper fleece, which is knotted behind the head with ribbons - was formerly used almost exclusively in operating theaters. Doctors and assistants wear this mouthguard primarily to prevent their patients on the operating table…

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