"Evidence" in this context is medical jargon, not the common meaning of the word. It means "results from randomized controlled trials". There is also "weak evid

"Evidence" in this context is medical jargon, not the common meaning of the word. It means "results from randomized controlled trials". There is also "weak evidence" (results from non-randomized trials). I wish they'd make the distinction clear, because if people assume it's the same word they end up thinking the medical professionals are liars or idiots. It's true that all those other viruses are "evidence" in the normal sense, but that's not what they mean.