Pulsed Broad-Spectrum UV Light Effectively Inactivates SARS-CoV-2 on Multiple Surfaces and N95 Material

Jureka, Alexander S.; Williams, Caroline G.; Basler, Christopher F.

doi:10.3390/v13030460

Cited by 18 publications

(17 citation statements)

References 53 publications

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“…SARS‐CoV‐2 is susceptible to simulated full‐spectrum UV light that approaches natural environmental conditions 92 . Broad‐spectrum UV may be effective for application to many material surfaces 93,94 . Although wavelengths of UV‐A and UV‐B have been considered as less effective, the utility of non‐UV‐C wavelengths remains controversial 95–97 .…”

Section: Irradiation Methodsmentioning

confidence: 99%

“… 92 Broad‐spectrum UV may be effective for application to many material surfaces. 93 , 94 Although wavelengths of UV‐A and UV‐B have been considered as less effective, the utility of non‐UV‐C wavelengths remains controversial. 95 , 96 , 97 Combinations of UV wavelengths and temperature enhancements have also been studied.…”

Section: Irradiation Methodsmentioning

confidence: 99%

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Disinfection and decontamination in the context of SARS‐CoV‐2‐specific data

Cimolai

2022

Journal of Medical Virology

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Given the high transmissibility of severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) as witnessed early in the coronavirus disease 2019 (COVID‐19) pandemic, concerns arose with the existing methods for virus disinfection and decontamination. The need for SARS‐CoV‐2‐specific data stimulated considerable research in this regard. Overall, SARS‐CoV‐2 is practically and equally susceptible to approaches for disinfection and decontamination that have been previously found for other human or animal coronaviruses. The latter have included techniques utilizing temperature modulation, pH extremes, irradiation, and chemical treatments. These physicochemical methods are a necessary adjunct to other prevention strategies, given the environmental and patient surface ubiquity of the virus. Classic studies of disinfection have also allowed for extrapolation to the eradication of the virus on human mucosal surfaces by some chemical means. Despite considerable laboratory study, practical field assessments are generally lacking and need to be encouraged to confirm the correlation of interventions with viral eradication and infection prevention. Transparency in the constitution and use of any method or chemical is also essential to furthering practical applications.

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Section: Irradiation Methodsmentioning

confidence: 99%

Section: Irradiation Methodsmentioning

confidence: 99%

Disinfection and decontamination in the context of SARS‐CoV‐2‐specific data

Cimolai

2022

Journal of Medical Virology

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“…More recently, UV technology has been increasingly used for disinfection of surfaces in hospital settings [40][41][42] . A recent study examined the impact of common hospital surfaces (plastic, stainless steel and copper) on UV disinfection e ciency 43 ; however, there is still a signi cant gap in UV surface disinfection knowledge. As mentioned by a recent study 44 , the applied UV uence delivered onto a surface does not necessarily re ect the UV uence received.…”

Section: Implications Of Uv Disinfection On Surfacesmentioning

confidence: 99%

Specificity of UV-C LED Disinfection Efficacy for Three N95 Respirators

Ontiveros

Shoults

MacIsaac

et al. 2021

Preprint

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The recent surge in the use of UV technology for personal protective equipment (PPE) has created a unique learning opportunity for the UV industry to deepen surface disinfection knowledge, especially on surfaces with complex geometries, such as the N95 filter facepiece respirators (FFR). The work outlined in this study addresses the interconnectedness of independent variables (e.g., UV Fluence, respirator material) that require consideration when assessing UV light efficacy for disinfecting respirators. Through electron microscopy and Fourier-transform infrared (FTIR) spectroscopy, we characterized respirator filter layers and revealed that polymer type affects disinfection efficacy. Specifically, FFR layers made from polypropylene (PP) (hydrophobic in nature) resulted in higher disinfection efficiency than layers composed of polyethylene terephthalate (PET-P) (hygroscopic in nature). An analysis of elastic band materials on the respirators indicated that silicone rubber-based bands achieved higher disinfection efficiency than PET-P bands and have a woven, fabric-like texture. While there is a strong desire to repurpose respirators, through this work we demonstrated that the design of an appropriate UV system is essential and that only respirators meeting specific design criteria may be reasonable for repurposing via UV disinfection.

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“…Ultraviolet lights were installed in HVAC systems in all resident dormitories to minimize airborne spread of the virus (HUM, 2020). Ultraviolet light has been found to effectively inactivate SARS‐CoV‐2 virus and significantly lower the rate of COVID‐19 transmission (Carleton et al., 2021; Gidari et al., 2021; Jureka et al., 2021).…”

Section: Organizational Changesmentioning

confidence: 99%

Protecting persons experiencing homelessness through a global pandemic

Lashley

Stoltzfus²

2021

Public Health Nursing

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In response to the challenges imposed by the COVID‐19 global pandemic, the leadership of a large homeless service and residential recovery organization transformed its organizational practices in accordance with best available evidence for prevention and containment of the SARS‐CoV‐2 virus. The coordinated organizational response was based on the CDC's “whole community” framework for addressing the threat of COVID‐19 among persons experiencing homelessness and included strategies for preparation and containment of the virus and identification of exposures and disease outbreaks. Organizational practice changes were also instituted to mitigate spread. New protocols and procedures addressed admission intake processes, testing and monitoring, and guidelines for managing staff, vendors, and volunteers. Finally, an on‐site vaccination clinic was organized through the establishment of a four‐pronged coalition. The program outreached to staff, residents, and essential volunteers. Following implementation of this coordinated organizational response, confirmed SARS CoV‐2 cases in the facility declined to zero. Through this experience, the leadership became more adept at improving its digital fitness and pivoting when circumstances dictated a shift in policy and practice. In every major initiative or policy change aimed at addressing the spread of the virus, community partnerships were key to effective implementation of COVID‐19 prevention and containment strategies.

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Pulsed Broad-Spectrum UV Light Effectively Inactivates SARS-CoV-2 on Multiple Surfaces and N95 Material

Cited by 18 publications

References 53 publications

Disinfection and decontamination in the context of SARS‐CoV‐2‐specific data

Disinfection and decontamination in the context of SARS‐CoV‐2‐specific data

Specificity of UV-C LED Disinfection Efficacy for Three N95 Respirators

Protecting persons experiencing homelessness through a global pandemic

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