Medical masks vs N95 respirators for preventing COVID-19 in healthcare workers: A systematic review and meta-analysis of randomized trials.
Jessica J BartoszkoMohammed Abdul Malik FarooqiWaleed AlhazzaniMark LoebPublished in: Influenza and other respiratory viruses (2020)
Low certainty evidence suggests that medical masks and N95 respirators offer similar protection against viral respiratory infection including coronavirus in healthcare workers during non-aerosol-generating care. Preservation of N95 respirators for high-risk, aerosol-generating procedures in this pandemic should be considered when in short supply.