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10.1016/j.jhin.2020.08.025

http://scihub22266oqcxt.onion/10.1016/j.jhin.2020.08.025
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suck abstract from ncbi


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pmid32889029      J+Hosp+Infect 2020 ; 106 (3): 577-584
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  • The use of germicidal ultraviolet light, vaporized hydrogen peroxide and dry heat to decontaminate face masks and filtering respirators contaminated with a SARS-CoV-2 surrogate virus #MMPMID32889029
  • Ludwig-Begall LF; Wielick C; Dams L; Nauwynck H; Demeuldre PF; Napp A; Laperre J; Haubruge E; Thiry E
  • J Hosp Infect 2020[Nov]; 106 (3): 577-584 PMID32889029show ga
  • BACKGROUND: In the context of the ongoing severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic, the supply of personal protective equipment remains under severe strain. To address this issue, re-use of surgical face masks and filtering facepiece respirators has been recommended; prior decontamination is paramount to their re-use. AIM: We aim to provide information on the effects of three decontamination procedures on porcine respiratory coronavirus (PRCV)-contaminated masks and respirators, presenting a stable model for infectious coronavirus decontamination of these typically single-use-only products. METHODS: Surgical masks and filtering facepiece respirator coupons and straps were inoculated with infectious PRCV and submitted to three decontamination treatments, ultraviolet (UV) irradiation, vaporized H(2)O(2), and dry heat treatment. Viruses were recovered from sample materials and viral titres were measured in swine testicle cells. FINDINGS: UV irradiation, vaporized H(2)O(2) and dry heat reduced infectious PRCV by more than three orders of magnitude on mask and respirator coupons and rendered it undetectable in all decontamination assays. CONCLUSION: This is the first description of stable disinfection of face masks and filtering facepiece respirators contaminated with an infectious SARS-CoV-2 surrogate using UV irradiation, vaporized H(2)O(2) and dry heat treatment. The three methods permit demonstration of a loss of infectivity by more than three orders of magnitude of an infectious coronavirus in line with the United States Food and Drug Administration policy regarding face masks and respirators. It presents advantages of uncomplicated manipulation and utilization in a BSL2 facility, therefore being easily adaptable to other respirator and mask types.
  • |*Hot Temperature[MESH]
  • |*Ultraviolet Rays[MESH]
  • |Coronavirus Infections/*prevention & control[MESH]
  • |Decontamination/*standards[MESH]
  • |Equipment Reuse/*standards[MESH]
  • |Guidelines as Topic[MESH]
  • |Humans[MESH]
  • |Hydrogen Peroxide/*standards[MESH]
  • |Respiratory Protective Devices/*virology[MESH]


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