ABSTRACT

Although ozonated water is one of the promising candidates for hand hygiene to prevent fomite infection, the detailed effects of ozonated water on SARS-CoV-2 have not been clarified. We evaluated the inactivating effect of ozonated water against SARS-CoV-2 by its concentration and exposure time. The reduction rates of virus titer after 5 sec treatment with ozone concentrations of 1, 4, 7, and 10 mg/L were 81.4%, 93.2%, 96.6%, and 96.6%, respectively. No further decrease in virus titer was observed by the extended exposure time over 5 sec. High-concentration ozonated water, such as more than 7 mg/L, was considered to be effective in promptly inactivating SARS-CoV-2 virus in aqueous solution.

摘要

尽管臭氧水是防止手部细菌感染的有希望的手部卫生措施之一，但臭氧水对SARS-CoV-2的详细作用尚未阐明。我们通过其浓度和暴露时间评估了臭氧水对SARS-CoV-2的灭活作用。在臭氧浓度分别为1、4、7和10 mg / L的情况下处理5秒钟后，病毒滴度的降低率分别为81.4％，93.2％，96.6％和96.6％。通过延长暴露时间超过5秒，未观察到病毒滴度的进一步降低。高浓度的臭氧水（例如超过7 mg / L）被认为可以有效地使水溶液中的SARS-CoV-2病毒迅速失活。