COVID AND THE VACCINE - TRUTH, LIES, AND MISCONCEPTIONS REVEALED, page-39542

As we moved north out of Africa and skin lightened, people adapted to completely different environments advantages and cost in many ways. Over time, Vit D levels in the northern latitudes lack of light intensity was supplemented thru a diet subsidised by access to oily(read Vit D rich) fish in cold northern waters.
Somali refugees in Sweden contributed a proportionally large percentage by population of deaths attributed to covid, and the lower light levels and intensity, together with traditional clothing, and diet, add weight to the Vit D connection.
We can now, and have for a long time, move and translocate, faster than we can adapt.
The closer you remain to "home", the longer you may well last.