> Mathematical models developed by Seifer & Elbaum (2020) aimed to assess the inactivation of SARS-CoV-2 at physiologically relevant temperatures, i.e. around 4

> Mathematical models developed by Seifer & Elbaum (2020) aimed to assess the inactivation of SARS-CoV-2 at physiologically relevant temperatures, i.e. around 40⁰C, and at mild extremes of up to 60⁰C. In cell culture SARS-CoV-2 showed a 99.99% fold reduction in activity after incubation at 56⁰C for 15 minutes, which was in line with the predictions made by the mathematical model, lending some credence to the work. At a normal body temperature of 37⁰C, the model predicts 99.99% inactivation after 48 hours, while a mildly elevated temperature of 39⁰C is expected to induce 99% inactivation at 14 hours, increasing to 99.99% inactivation after 28 hours. - https://www.news-medical.net/life-sciences/The-Thermal-Inactivation-of-SARS-CoV-2.aspx https://www.news-medical.net/life-sciences/The-Thermal-Inact... Take that for what it's worth but I honestly thought that this was well known and uncontroversial. There are other factors, such as the dryness of the heat. But a surface under sunlight in a hot climate could easily hit over 40⁰C