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To prevent the spread of the virus, in February 2020, the Italian government issued a recommendation, among the methods of sanitizing the environments, for the use of 0.5% hydrogen peroxide.1 Hydrogen peroxide is already widely used as an environmental, surgical disinfectant and as an oral disinfectant in the treatment of gingivitis.2,3 SARSCoV-2 is spread by human-to-human transmission; the infection is estimated to have an average incubation period of 6.4 days and a base reproduction number of 2.24–3.58.4

Furthermore, scientific studies have proven that the virus persists for 2 days on the mucous membranes of macaques5 before the subsequent spread of the virus to the lower respiratory tract. This delay represents a window of therapeutic opportunity.

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