The face mask stood for a strategy of infection control that focused on keeping all germs away, as opposed to killing them with chemicals. The physician Alexander Fraenkel in Berlin, for example, was sceptical about the “whole surgical costume with a bonnet, mouth mask and veil, devised under the slogan of total wound sterility”. A… Continue reading Surgical Face Masks Respirators, N95 Respirators and Face Shields Visors