Dexamethasone, for one. Might be others in that category as I forget all that went down in early 2020 regarding all of the anti-immune drugs that were tried.

Dexamethasone, for one. Might be others in that category as I forget all that went down in early 2020 regarding all of the anti-immune drugs that were tried. There's been a tremendous large and small molecule increase in such things and they'd be ignored if they showed something but less than the cheap/old steroid. It was a "throw against wall and hope it sticks" time. Googling finds literature articles discussing such things, but "steroid + rapid vaccines + rapid mutation" made it less interesting considering clinical trials of guesses and possibilities. They had a virus sequence almost immediately which enabled various types of vaccines to start development. In my wife's case, possibly coincidentally, lung inflammation/shortness of breath went away with the first vaccine doses. Can't be sure re: long covid as we had no test saying it was covid back then.