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- Title
Survival of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) and Influenza Virus on Human Skin: Importance of Hand Hygiene in Coronavirus Disease 2019 (COVID-19).
- Authors
Hirose, Ryohei; Ikegaya, Hiroshi; Naito, Yuji; Watanabe, Naoto; Yoshida, Takuma; Bandou, Risa; Daidoji, Tomo; Itoh, Yoshito; Nakaya, Takaaki
- Abstract
Background The stability of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) on human skin remains unknown, considering the hazards of viral exposure to humans. We generated a model that allows the safe reproduction of clinical studies on the application of pathogens to human skin and elucidated the stability of SARS-CoV-2 on human skin. Methods We evaluated the stability of SARS-CoV-2 and influenza A virus (IAV), mixed with culture medium or upper respiratory mucus, on human skin surfaces and the dermal disinfection effectiveness of 80% (weight/weight) ethanol against SARS-CoV-2 and IAV. Results SARS-CoV-2 and IAV were inactivated more rapidly on skin surfaces than on other surfaces (stainless steel/glass/plastic); the survival time was significantly longer for SARS-CoV-2 than for IAV (9.04 hours [95% confidence interval, 7.96– 10.2 hours] vs 1.82 hours [1.65–2.00 hours]). IAV on other surfaces was inactivated faster in mucus versus medium conditions, while SARS-CoV-2 showed similar stability in the mucus and medium; the survival time was significantly longer for SARS-CoV-2 than for IAV (11.09 hours [10.22–12.00 hours] vs 1.69 hours [1.57–1.81 hours]). Moreover, both SARS-CoV-2 and IAV in the mucus/medium on human skin were completely inactivated within 15 seconds by ethanol treatment. Conclusions The 9-hour survival of SARS-CoV-2 on human skin may increase the risk of contact transmission in comparison with IAV, thus accelerating the pandemic. Proper hand hygiene is important to prevent the spread of SARS-CoV-2 infections.
- Subjects
SURVIVAL; SKIN diseases; MUCUS; COVID-19; SEVERITY of illness index; ORTHOMYXOVIRUSES; COMPARATIVE studies; DESCRIPTIVE statistics; INFECTIOUS disease transmission; HAND washing; ETHANOL; MICROBIAL sensitivity tests; DISEASE risk factors
- Publication
Clinical Infectious Diseases, 2021, Vol 73, Issue 11, pe4329
- ISSN
1058-4838
- Publication type
Article
- DOI
10.1093/cid/ciaa1517