[eatmyshorts]

As I understand it, hotter weather helps to prevent the progression of the disease from the upper respiratory to the lower respiratory. When the disease moves to the lower respiratory area, patients typically need hospitalization and a ventilator, and are at a much higher risk of death. If you look at the death rates in Brazil and Australia, they are lower than in the northern hemisphere. Likewise, countries with ample spare ICU beds and ventilators (like Germany) have lower death rates than countries that don't (like Italy).