id author title date pages extension mime words sentences flesch summary cache txt cord-288569-sitxa2ul Smereka, Jacek Role of Mask/Respirator Protection Against SARS-CoV-2 2020-04-20 .txt text/plain 713 54 62 1 There are currently many types of masks/respirators available, ranging from simple surgical masks designed to protect wearers from microorganism transmission and fit loosely to the user's face, through N95 masks used to prevent users from inhaling small airborne particles. Surgical masks are designed to protect against droplets or particles with a diameter of >100 μm, whereas severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus is essentially spherical, albeit slightly pleomorphic, with a diameter of 60-140 nm and 100 times smaller than the pore diameter. Long et al 5 conclude in their meta-analysis that the use of N95 respirators compared with surgical masks is not associated with a lower risk of laboratory-confirmed influenza. Wang et al 1 indicated that 10 of 213 medical professionals with no mask were infected by COVID-19 as compared with 0 of 278 wearing N95 respirators. 6 To conclude, the use of protective masks can and should be the first protection against SARS-CoV-2 transmission to medical personnel. ./cache/cord-288569-sitxa2ul.txt ./txt/cord-288569-sitxa2ul.txt