The polio vaccine was given pre 1950 and what docs are seeing now is post polio syndrome, which direct cause is/was the vaccine.
I’m sorry, but you should look that up. You don’t get post polio syndrome from the vaccine. You have to have actually had polio and survived, like my father did in 1945. He spent nearly a year in an iron lung, yet lost only the use of his left shoulder and bicep muscles.
This is why Drs. are seeing more PPS, because of the aging of the last polio survivor generation.
The numbers of people with vaccine acquired polio from the oral vaccine is minuscule, like 154 cases total since the introduction of the oral vaccine compared to 13-20,000 paralyzed per year from actual polio.
Vaccine acquired polio as a source of post polio syndrome is vanishingly small compared to the large number of actual polio survivors still alive today