My father born in 1921 caught polio and had to learn to walk again, and went on to win at high school track meets running the 220 yard race.
When I was in grade school in 1958, there was a girl in leg braces with polio.
The whole grade school stood in line 3 times and got our 3 polio shots. Those who scratched the scab, now have a scar on their shoulder.