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Article

SARS-CoV-2 Survival on Surfaces and the Effect of UV-C Light

1
Department of Medicine and Surgery, Clinic of Infectious Diseases, “Santa Maria della Misericordia” Hospital, University of Perugia, 06129 Perugia, Italy
2
Department of Medicine and Surgery, Medical Microbiology Section, University of Perugia, 06129 Perugia, Italy
3
Department of Pharmaceutical Sciences, Unit of Nutrition and Clinical Biochemistry, University of Perugia, 06122 Perugia, Italy
4
Department of Medicine and Surgery, Unit of Human, Clinical and Forensic Anatomy, University of Perugia, 06129 Perugia, Italy
5
Department of Chemistry, Biology and Biotechnology, University of Perugia, 06123 Perugia, Italy
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Luis Martinez-Sobrido
Viruses 2021, 13(3), 408; https://doi.org/10.3390/v13030408
Received: 26 January 2021 / Revised: 24 February 2021 / Accepted: 2 March 2021 / Published: 5 March 2021
(This article belongs to the Section SARS-CoV-2 and COVID-19)
The aim of this study was to establish the persistence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) on inanimate surfaces such as plastic, stainless steel, and glass during UV-C irradiation which is a physical means commonly utilized in sanitization procedures. The viral inactivation rate, virus half-life, and percentage of titer reduction after UV-C irradiation were assessed. Infectivity was maintained on plastic and glass until 120 h and on stainless steel until 72 h. The virus half-life was 5.3, 4.4, and 4.2 h on plastic, stainless steel, and glass, respectively. In all cases, titer decay was >99% after drop drying. UV-C irradiation efficiently reduced virus titer (99.99%), with doses ranging from 10.25 to 23.71 mJ/cm2. Plastic and stainless steel needed higher doses to achieve target reduction. The total inactivation of SARS-CoV-2 on glass was obtained with the lower dose applied. SARS-CoV-2 survival can be long lasting on inanimate surfaces. It is worth recommending efficient disinfection protocols as a measure of prevention of viral spread. UV-C can provide rapid, efficient and sustainable sanitization procedures of different materials and surfaces. The dosages and mode of irradiation are important parameters to consider in their implementation as an important means to fight the SARS-CoV-2 pandemic. View Full-Text
Keywords: COVID-19; SARS-CoV-2; UV-C; surfaces; persistence; glass; steel; plastic COVID-19; SARS-CoV-2; UV-C; surfaces; persistence; glass; steel; plastic
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MDPI and ACS Style

Gidari, A.; Sabbatini, S.; Bastianelli, S.; Pierucci, S.; Busti, C.; Bartolini, D.; Stabile, A.M.; Monari, C.; Galli, F.; Rende, M.; Cruciani, G.; Francisci, D. SARS-CoV-2 Survival on Surfaces and the Effect of UV-C Light. Viruses 2021, 13, 408. https://doi.org/10.3390/v13030408

AMA Style

Gidari A, Sabbatini S, Bastianelli S, Pierucci S, Busti C, Bartolini D, Stabile AM, Monari C, Galli F, Rende M, Cruciani G, Francisci D. SARS-CoV-2 Survival on Surfaces and the Effect of UV-C Light. Viruses. 2021; 13(3):408. https://doi.org/10.3390/v13030408

Chicago/Turabian Style

Gidari, Anna, Samuele Sabbatini, Sabrina Bastianelli, Sara Pierucci, Chiara Busti, Desirée Bartolini, Anna M. Stabile, Claudia Monari, Francesco Galli, Mario Rende, Gabriele Cruciani, and Daniela Francisci. 2021. "SARS-CoV-2 Survival on Surfaces and the Effect of UV-C Light" Viruses 13, no. 3: 408. https://doi.org/10.3390/v13030408

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