Yeah, I guarantee you that even with a 10% fatality rate 90% of people will get better spontaneously on their own. So any prospective treatment would have to do

Yeah, I guarantee you that even with a 10% fatality rate 90% of people will get better spontaneously on their own. So any prospective treatment would have to do better than the recovery rate without treatment. This is really a situation where the phrase "the plural of anecdote is not statistics."