This is a really stupid example because they didn't actually do the kind of double-blind peer-reviewed trials for the polio vaccine that you seem to think is the only way for "science" to declare something as acceptable - they just did it. And actually, in the first round of "trials" for the Polio vaccine a bunch of children died. But, thankfully, we didn't have some annoying corporate apparatus running things at the time, so we eventually got over that initial hiccup and BAM ... no more Polio.