You are aware of "off-label" use, right? Just because it's designed for one purpose doesn't mean it's not good for another.By all means, let’s use something meant to treat intestinal parasites in livestock before considering a TAILOR MADE vaccine. There is not a shred of reputable evidence thatvsays it’s effective.
As for evidence, it's out there if you're actually interested in seeing it. Same for HCQ. But I've found that most people won't be swayed by any amount of evidence.