Can wearing a mask prevent coronavirus pneumonia?

- Apr 28, 2020-

New coronavirus pneumonia can be prevented by correctly wearing a mask and paying attention to hand hygiene. The new coronavirus is mainly transmitted through respiratory droplets, contact transmission and aerosol transmission. New medical coronavirus infections can be prevented by wearing medical protective masks or medical surgical masks. Disposable medical masks do not protect against new coronaviruses, but the filtration efficiency of 2 micron bacteria reaches 95%, which is suitable for people in crowded areas, indoor office environments, and medical institutions. Ordinary masks, cotton yarn masks, activated carbon masks, etc. are not recommended to prevent viral infections.