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UVC Germicidal Units: Determination of Dose Received and Parameters to be Considered for N95 Respirator Decontamination and Reuse.
Kohli, Indermeet; Lyons, Alexis B; Golding, Bob; Narla, Shanthi; Torres, Angeli E; Parks-Miller, Angela; Ozog, David; Lim, Henry W; Hamzavi, Iltefat H.
  • Kohli I; Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Health System, Detroit, MI.
  • Lyons AB; Department of Physics and Astronomy, Wayne State University, Detroit, MI.
  • Golding B; Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Health System, Detroit, MI.
  • Narla S; Daavlin, Bryan, OH.
  • Torres AE; Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Health System, Detroit, MI.
  • Parks-Miller A; Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Health System, Detroit, MI.
  • Ozog D; Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Health System, Detroit, MI.
  • Lim HW; Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Health System, Detroit, MI.
  • Hamzavi IH; Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Health System, Detroit, MI.
Photochem Photobiol ; 96(5): 1083-1087, 2020 09.
Article in English | MEDLINE | ID: covidwho-696014
ABSTRACT
The COVID-19 pandemic has resulted in an international shortage of personal protective equipment including N95 filtering facepiece respirators (FFRs), resulting in many institutions using ultraviolet germicidal irradiation (UVGI) technology for N95 FFR decontamination. To ensure proper decontamination, it is crucial to determine the dose received by various parts of the FFR in this process. Recently, our group customized a UVGI unit for N95 decontamination. With experimental and theoretical approach, this manuscript discusses the minimum dose received by various parts of the N95 respirator after one complete decontamination cycle with this UVGI unit. The results demonstrate that all parts of the N95 FFR received at least 1 J cm-2 after one complete decontamination cycle with this unit. As there are a variety of UVGI devices and different types of FFRs, this study provides a model by which UVC dose received by different areas of the FFRs can be accurately assessed to ensure proper decontamination for the safety of healthcare providers.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: Pneumonia, Viral / Decontamination / Disinfection / Coronavirus Infections / Pandemics / Personal Protective Equipment / Betacoronavirus Limits: Humans Language: English Journal: Photochem Photobiol Year: 2020 Document Type: Article

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Pneumonia, Viral / Decontamination / Disinfection / Coronavirus Infections / Pandemics / Personal Protective Equipment / Betacoronavirus Limits: Humans Language: English Journal: Photochem Photobiol Year: 2020 Document Type: Article