The countries with a high incidence of endemic strongyloides infection, which appears to have been a co-morbidity leading to poor outcomes with the original CCP “Wuhan” variant.
I think you are onto something there. Ivermectin *would* be helpful in such countries! I mentioned the strongyloides thing in my post #124 here (penultimate paragraph):
https://freerepublic.com/focus/chat/4086071/posts?page=124#124