There are other papers that argue similar. On April 20, Alimentary Pharmacology and Therapeutics: low population mortality from COVID‐19 in countries south of l

There are other papers that argue similar. On April 20, Alimentary Pharmacology and Therapeutics: low population mortality from COVID‐19 in countries south of latitude 35 degrees North supports vitamin D as a factor determining severity https://onlinelibrary.wiley.com/doi/full/10.1111/apt.15777 https://onlinelibrary.wiley.com/doi/full/10.1111/apt.15777 It also notes: > It could be argued that the virus spread later to the Southern Hemisphere and that countries there are simply behind those in the Northern Hemisphere but as time goes by this argument looks increasingly weak.