Effectiveness of automated ultraviolet-C light for decontamination of textiles inoculated with Enterococcus faecium

Smolle, Christian; Huss, Fredrik; Lindblad, Marie; Reischies, Frederike; Tano, Eva

doi:10.1016/j.jhin.2017.07.034

Cited by 13 publications

(10 citation statements)

References 10 publications

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“…After 2 h of exposure, no spores were recovered, representing a >5-log reduction on both strains. Fu et al [82] 2012 Two rooms to simulate a patient room ( [190] 2018 Hospital room Textiles inoculated with Enterococcus faecium were disinfected using UVC.…”

Section: Author Year Setting Design Resultsmentioning

confidence: 99%

An overview of automated room disinfection systems: When to use them and how to choose them

Otter

Yezli

Barbut

et al. 2020

Decontamination in Hospitals and Healthcare

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Section: Author Year Setting Design Resultsmentioning

confidence: 99%

An overview of automated room disinfection systems: When to use them and how to choose them

Otter

Yezli

Barbut

et al. 2020

Decontamination in Hospitals and Healthcare

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“…We hypothesized that the disinfection cabinet would be very effective while UV-C light might have reduced efficacy in contrast to previous reports that evaluated microorganism reductions on steel disk carriers or hard surfaces in healthcare settings [14][15]. Soft, irregular surfaces may present a challenge for UV-C decontamination due to the potential for areas of shadowing and absorption of organisms into sites with reduced delivery of UV-C [16]. Table 1 shows the test organisms studied and their characteristics.…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of Ultraviolet-C Light and a High-Level Disinfection Cabinet for Decontamination of N95 Respirators

Cadnum

Redmond

et al. 2020

PAI

104

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Background: Shortages of personal protective equipment (PPE) including N95 respirators are an urgent concern in the setting of the global COVID-19 pandemic. Decontamination of PPE could be useful to maintain adequate supplies, but there is uncertainty regarding the efficacy of decontamination technologies.Correction: This is a corrected version of this article. The original version of this article contained data for an additional ultraviolet light device that has been removed from the corrected version as the device tested is no longer manufactured or supported by the manufacturer. The authors have offered to collaborate with the manufacturer to complete additional testing with a current version of the technology. Methods:A modification of the American Society for Testing and Materials standard quantitative carrier disk test method (ASTM E-2197-11) was used to examine the effectiveness of 3 methods, including ultraviolet-C (UV-C) light, a high-level disinfection cabinet that generates aerosolized peracetic acid and hydrogen peroxide, and dry heat at 70°C for 30 minutes. We assessed the decontamination of 3 commercial N95 respirators inoculated with methicillin-resistant Staphylococcus aureus (MRSA) and bacteriophages MS2 and Phi6; the latter is an enveloped RNA virus used as a surrogate for coronaviruses. Three and 6 log 10 reductions on respirators were considered effective for decontamination and disinfection, respectively. Results: UV-C administered as a 1-minute cycle in a UV-C box or a 30-minute cycle by a room decontamination device reduced contamination but did not meet criteria for decontamination of the viruses from all sites on the N95s. The high-level disinfection cabinet was effective for decontamination of the N95s and achieved disinfection with an extended 31-minute cycle. Dry heat at 70°C for 30 minutes was not effective for decontamination of the bacteriophages. Conclusions:UV-C could be useful to reduce contamination on N95 respirators. However, the UV-C technologies studied did not meet pre-established criteria for decontamination under the test conditions used. The high-level disinfection cabinet was more effective and met criteria for disinfection with an extended cycle.

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“…While UV-C has been demonstrated to inactivate several species of vegetative bacteria and bacterial spores on N95 FFRs and other textiles, [44][45][46][47][48][49] 3-log reduction was not always demonstrated and it is unclear how many bacterial pathogens would be inactivated by the 1.0 J/cm 2 UV-C dose required for SARS-CoV-2 analogue inactivation on most N95 FFR models. For example, UV-C inactivation of Clostridium difficile on N95 FFRs has not been studied.…”

Section: Efficacy Of Uv-c On Inactivation Of Other Pathogensmentioning

confidence: 99%

Current Understanding of Ultraviolet-C Decontamination of N95 Filtering Facepiece Respirators

et al. 2021

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Effectiveness of automated ultraviolet-C light for decontamination of textiles inoculated with Enterococcus faecium

Cited by 13 publications

References 10 publications

An overview of automated room disinfection systems: When to use them and how to choose them

An overview of automated room disinfection systems: When to use them and how to choose them

Effectiveness of Ultraviolet-C Light and a High-Level Disinfection Cabinet for Decontamination of N95 Respirators

Current Understanding of Ultraviolet-C Decontamination of N95 Filtering Facepiece Respirators

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