I'm in my mid 80's now and can remember what many people had to suffer through all their lives because there was no polio vaccine. Polio is now almost an unknown disease due to the availability of vaccines in the parts of the world where they are commonly available. Had one close friend who almost died at 19 from polio. He eventually "got better" but went through his life minus the use of his elbows. Fortunately for my friend he was a person of tremendous willpower who managed to overcome this in his own way.

Vaccines may not be perfect but they help millions of people IMO.

Jim