Did the polio vaccine get rid of polio?

Mostly: Not completely, as there are still pockets of polio infections on earth. However, the incidence of polio is essentially close to zero thanks to the effectiveness of the vaccine. There is no other reason for that improvement.

Mostly: Wild type poliomyelitis virus still circulates in some areas of the world but is almost never acquired elsewhere.

MostOfTheWorldExcept: Polio Vaccine has been successful in getting rid of Polio all over the world except in Pakistan,Afganistan and Nigeria only due to treistance to vaccinate their children