id author title date pages extension mime words sentences flesch summary cache txt cord-259667-x51jorbm Chughtai, Abrar Ahmad Contamination by respiratory viruses on outer surface of medical masks used by hospital healthcare workers 2019-06-03 .txt text/plain 4272 222 55 title: Contamination by respiratory viruses on outer surface of medical masks used by hospital healthcare workers BACKGROUND: Medical masks are commonly used in health care settings to protect healthcare workers (HCWs) from respiratory and other infections. Used samples of medical masks were tested for presence of respiratory viruses in upper sections of the medical masks, in line with the pilot studies. Currently there is no standard duration for the time period that facemasks and respirators can safely One study showed that influenza virus may survive on mask surface and maintained infectivity for at least 8 h [25] . High virus positivity on masks samples worn by HCWs who examined > 25 patients, may be due to more frequent clinical contact with infective cases and transfer of more pathogens from patients to mask surface. The study shows that the prolonged use of medical masks (> 6 h) and frequent clinical contact in healthcare setting increase the risk to health workers through contaminated PPE. ./cache/cord-259667-x51jorbm.txt ./txt/cord-259667-x51jorbm.txt