Quote:
Originally Posted by maniac_73
The first polio vaccine was a disaster which actually caused polio and killed ppl
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Unless I'm not remembering correctly what I saw on a PBS show about the polio vaccine a while ago, the problem wasn't with the vaccine but with the manufacturing of the vaccine at a specific facility. Instead of containing dead polio virus, it was made with live polio virus at one location. Shots of the vaccine made at any other facility did not create any problems. It was a manufacturing failure, not a vaccine failure.