期刊
AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE
卷 104, 期 2, 页码 549-551出版社
AMER SOC TROP MED & HYGIENE
DOI: 10.4269/ajtmh.20-1508
关键词
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The study found that all PPE materials showed a significant reduction in titers within 72 hours of exposure to SARS-CoV-2. Proper doffing and disinfection of PPE, or disposal, are essential in reducing the risk of SARS-CoV-2 contact or fomite transmission.
We modeled the stability of SARS-CoV-2 on personal protective equipment (PPE) commonly worn in hospitals when carrying out high-risk airway procedures. Evaluated PPE included the visors and hoods of two brands of commercially available powered air purifying respirators, a disposable face shield, and Tyvek coveralls. Following an exposure to 4.3 log10 plaque-forming units (PFUs) of SARS-CoV-2, all materials displayed a reduction in titer of > 4.2 log10 by 72 hours postexposure, with detectable titers at 72 hours varying by material (1.1-2.3 log10 PFU/mL). Our results highlight the need for proper doffing and disinfection of PPE, or disposal, to reduce the risk of SARS-CoV-2 contact or fomite transmission.
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