Impact of ultraviolet germicidal irradiation on new silicone half-piece elastometric respirator (VJR-NMU) performance, structural integrity and sterility during the COVID-19 pandemic.

Since the innovation of our new half-piece elastometric respirator, this type of filtering facepiece respirator (FFR) has been used widely in Thailand. Decontamination methods including ultraviolet C (UVC) germicidal irradiation and 70% alcohol have been implemented to decontaminate these respirator...

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Autores principales:	Thananda Trakarnvanich, Uraporn Phumisantiphong, Sujaree Pupipatpab, Chayanee Setthabramote, Bunpot Seakow, Supanit Porntheeraphat, Jakravoot Maneerit, Anan Manomaipiboon
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2f22df7293424c45a2faec087f01175c
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spelling	oai:doaj.org-article:2f22df7293424c45a2faec087f01175c2021-12-02T20:07:53ZImpact of ultraviolet germicidal irradiation on new silicone half-piece elastometric respirator (VJR-NMU) performance, structural integrity and sterility during the COVID-19 pandemic.1932-620310.1371/journal.pone.0258245https://doaj.org/article/2f22df7293424c45a2faec087f01175c2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0258245https://doaj.org/toc/1932-6203Since the innovation of our new half-piece elastometric respirator, this type of filtering facepiece respirator (FFR) has been used widely in Thailand. Decontamination methods including ultraviolet C (UVC) germicidal irradiation and 70% alcohol have been implemented to decontaminate these respirators. We then examined the inactivation potential of different decontamination processes on porcine epidemic diarrhea virus (PEDV) and numerous bacterial strains, most of which were skin-derived. To enable rigorous integrity of the masks after repeated decontamination processes, fit tests by the Bitrex test, tensile strength and elongation at break were also evaluated. Our results showed that UVC irradiation at a dose of 3 J/cm2 can eradicate bacteria after 60 min and viruses after 10 min. No fungi were found on the mask surface before decontamination. The good fit test results, tensile strength and elongation at break were still maintained after multiple cycles of decontamination. No evidence of physical degradation was found by gross visual inspection. Alcohol (70%) is also an easy and effective way to eradicate microorganisms on respirators. As the current pandemic is expected to continue for months to years, the need to supply adequate reserves of personnel protective equipment (PPE) and develop effective PPE reprocessing methods is crucial. Our studies demonstrated that the novel silicone mask can be safely reprocessed and decontaminated for many cycles by UVC irradiation, which will help ameliorate the shortage of important protective devices in the COVID-19 pandemic era.Thananda TrakarnvanichUraporn PhumisantiphongSujaree PupipatpabChayanee SetthabramoteBunpot SeakowSupanit PorntheeraphatJakravoot ManeeritAnan ManomaipiboonPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 10, p e0258245 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Thananda Trakarnvanich Uraporn Phumisantiphong Sujaree Pupipatpab Chayanee Setthabramote Bunpot Seakow Supanit Porntheeraphat Jakravoot Maneerit Anan Manomaipiboon Impact of ultraviolet germicidal irradiation on new silicone half-piece elastometric respirator (VJR-NMU) performance, structural integrity and sterility during the COVID-19 pandemic.
description	Since the innovation of our new half-piece elastometric respirator, this type of filtering facepiece respirator (FFR) has been used widely in Thailand. Decontamination methods including ultraviolet C (UVC) germicidal irradiation and 70% alcohol have been implemented to decontaminate these respirators. We then examined the inactivation potential of different decontamination processes on porcine epidemic diarrhea virus (PEDV) and numerous bacterial strains, most of which were skin-derived. To enable rigorous integrity of the masks after repeated decontamination processes, fit tests by the Bitrex test, tensile strength and elongation at break were also evaluated. Our results showed that UVC irradiation at a dose of 3 J/cm2 can eradicate bacteria after 60 min and viruses after 10 min. No fungi were found on the mask surface before decontamination. The good fit test results, tensile strength and elongation at break were still maintained after multiple cycles of decontamination. No evidence of physical degradation was found by gross visual inspection. Alcohol (70%) is also an easy and effective way to eradicate microorganisms on respirators. As the current pandemic is expected to continue for months to years, the need to supply adequate reserves of personnel protective equipment (PPE) and develop effective PPE reprocessing methods is crucial. Our studies demonstrated that the novel silicone mask can be safely reprocessed and decontaminated for many cycles by UVC irradiation, which will help ameliorate the shortage of important protective devices in the COVID-19 pandemic era.
format	article
author	Thananda Trakarnvanich Uraporn Phumisantiphong Sujaree Pupipatpab Chayanee Setthabramote Bunpot Seakow Supanit Porntheeraphat Jakravoot Maneerit Anan Manomaipiboon
author_facet	Thananda Trakarnvanich Uraporn Phumisantiphong Sujaree Pupipatpab Chayanee Setthabramote Bunpot Seakow Supanit Porntheeraphat Jakravoot Maneerit Anan Manomaipiboon
author_sort	Thananda Trakarnvanich
title	Impact of ultraviolet germicidal irradiation on new silicone half-piece elastometric respirator (VJR-NMU) performance, structural integrity and sterility during the COVID-19 pandemic.
title_short	Impact of ultraviolet germicidal irradiation on new silicone half-piece elastometric respirator (VJR-NMU) performance, structural integrity and sterility during the COVID-19 pandemic.
title_full	Impact of ultraviolet germicidal irradiation on new silicone half-piece elastometric respirator (VJR-NMU) performance, structural integrity and sterility during the COVID-19 pandemic.
title_fullStr	Impact of ultraviolet germicidal irradiation on new silicone half-piece elastometric respirator (VJR-NMU) performance, structural integrity and sterility during the COVID-19 pandemic.
title_full_unstemmed	Impact of ultraviolet germicidal irradiation on new silicone half-piece elastometric respirator (VJR-NMU) performance, structural integrity and sterility during the COVID-19 pandemic.
title_sort	impact of ultraviolet germicidal irradiation on new silicone half-piece elastometric respirator (vjr-nmu) performance, structural integrity and sterility during the covid-19 pandemic.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/2f22df7293424c45a2faec087f01175c
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Impact of ultraviolet germicidal irradiation on new silicone half-piece elastometric respirator (VJR-NMU) performance, structural integrity and sterility during the COVID-19 pandemic.

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