Abstract:In order to scientifically prevent and control the epidemic of coronavirus disease 2019, different populations need to take different levels of protection, namely, precise protection for the crowd. Masksand respiratorsshould be chosen appropriately based on different places and crowds; moreover, it is necessary to correctly handling the used masksand respiratorswithout causing new pollution. This paper goes into detail about the standard and usage of masks and respirators as well as treatment of the used ones, and we hope you can protect yourself from coronavirus disease 2019 effectively without overprotection.
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