This is a really long shot, but if like Prusty says, our disease provides protection from some RNA/DNA virus (at the expense of everything else) I wonder if the "something in the blood" could provide protection from covid19. Because if there was even a hint that that can be true, it would instantaneously unlock unlimited funding for ME/CFS research, given how the entire world is scrambling to find a way to treat or contain covid19. I wrote on Prusty's twitter account, I'm curious to see if he has an answer.