Read post 10 of an article I posted in early 2015 about two monthe before my wife passed. The article I posted then was about a case of it in Nashville in a 14 yr old. https://freerepublic.com/focus/f-chat/3250930/posts
in India there is over 50,000 people that are palatalized from the vaccine when the have Zero cases of polio. They don't track shedding.
Polio programme: let us declare victory and move on at Indian J Med Ethics Apr-Jun 2012
https://pubmed.ncbi.nlm.nih.gov/22591873/