Osterholm is likely the “Dark Winter” line author.
Today I encountered an interesting youtube video explaining the exact process of how Covid infects various parts of the human body. Dr. Hansen wrote this April 15th, but there is probably now much more useful information. For example, he does not mention the attack on the red blood cells and the appearance of high levels of ferritin in the body after the RBCs are attacked. His explains how Covid attaches to ACE2 cells in the nose and mouth mucosa and eventually when it gets to the little air pockets (alveolea) in the lungs causes the cytokyme storms that are so fatal. This sounds like a good argument for masking, as if only small amounts of virus are getting through a mask they would probably mostly stop in the nose and mouth without getting deep into the lungs, thus making the illness more mild.
https://www.youtube.com/watch?v=LV8wWhjTKRU