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Article

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

Center for Microbial Pathogenesis, Institute for Biomedical Sciences, Georgia State University, Atlanta, GA 30303, USA
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Academic Editor: Luis Martinez-Sobrido
Viruses 2021, 13(3), 460; https://doi.org/10.3390/v13030460
Received: 14 February 2021 / Revised: 2 March 2021 / Accepted: 9 March 2021 / Published: 11 March 2021
(This article belongs to the Section SARS-CoV-2 and COVID-19)
The ongoing SARS-CoV-2 pandemic has resulted in an increased need for technologies capable of efficiently disinfecting public spaces as well as personal protective equipment. UV light disinfection is a well-established method for inactivating respiratory viruses. Here, we have determined that broad-spectrum, pulsed UV light is effective at inactivating SARS-CoV-2 on multiple surfaces in vitro. For hard, non-porous surfaces, we observed that SARS-CoV-2 was inactivated to undetectable levels on plastic and glass with a UV dose of 34.9 mJ/cm2 and stainless steel with a dose of 52.5 mJ/cm2. We also observed that broad-spectrum, pulsed UV light is effective at reducing SARS-CoV-2 on N95 respirator material to undetectable levels with a dose of 103 mJ/cm2. We included UV dosimeter cards that provide a colorimetric readout of UV dose and demonstrated their utility as a means to confirm desired levels of exposure were reached. Together, the results presented here demonstrate that broad-spectrum, pulsed UV light is an effective technology for the in vitro inactivation of SARS-CoV-2 on multiple surfaces. View Full-Text
Keywords: ultraviolet; SARS-CoV-2; COVID-19; coronavirus; inactivation ultraviolet; SARS-CoV-2; COVID-19; coronavirus; inactivation
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MDPI and ACS Style

Jureka, A.S.; Williams, C.G.; Basler, C.F. Pulsed Broad-Spectrum UV Light Effectively Inactivates SARS-CoV-2 on Multiple Surfaces and N95 Material. Viruses 2021, 13, 460. https://doi.org/10.3390/v13030460

AMA Style

Jureka AS, Williams CG, Basler CF. Pulsed Broad-Spectrum UV Light Effectively Inactivates SARS-CoV-2 on Multiple Surfaces and N95 Material. Viruses. 2021; 13(3):460. https://doi.org/10.3390/v13030460

Chicago/Turabian Style

Jureka, Alexander S., Caroline G. Williams, and Christopher F. Basler 2021. "Pulsed Broad-Spectrum UV Light Effectively Inactivates SARS-CoV-2 on Multiple Surfaces and N95 Material" Viruses 13, no. 3: 460. https://doi.org/10.3390/v13030460

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