> 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.
I don’t think you need a hot climate for that. Most surfaces absorb a lot more energy from sunlight than air does, making them hotter than air temperature.
Not quite. The cold temporarily weakens our immune systems, particularly in our upper respiratory tract. Couple that with increased proximity to other people in many places when people are more likely to use public transport.
I've not seen studies suggesting that the heat in warmer climates is warm enough to kill off germs in a way that would be relevant. I have seen studies showing the impact of cold on our immune systems. Feel free to provide sources though.
