Isopropyl alcohol and ethyl alcohol … [at] 60%-70% solutions have in vitro efficacy against murine norovirus, Ebola virus, and several coronaviruses.
Infect Control Hosp Epidemiol. 2018 Mar;39(3):323-328
Dilution to 60-70% as suggested in the recipe is pushing the lower limit of the recommendation, so it seems wise aim for a bit more alcohol. I note that the CDC recommends, specifically for COVID-19, “an alcohol-based hand sanitizer that contains at least 60%-95% alcohol.”
Supermarket supplies here (Ontario, GTA), when I checked on Saturday, were well down or at zero.
