Polio comparison?

Polio "was attacked" with iron lungs and attenuated (half dead virus) vaccines.  These things developed over the course of years.

I'm sure we can find dozens of examples of snake oils in the course of those years. 

Calm down, there is no conspiracy to kill people here.  Just being safe.  Making sure that going all in on this one is the right move and it doesn't delay going all in on the right one.