Covid-19 : Les masques et les « gestes barrières » sont inutiles (Prof. Denis Rancourt)
Un autre point de vue : Is it useful to use a face-shield in addition to a mask? Possibly Yes. After a cough, ~0.85% of the produced particles are inhaled by someone located at 50 cm wearing no mask [1]. Immediately after a cough at 50 cm, it stops 96% of the viral charge and reduces the virus on a […]
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