As a member of Rotary, it is crazy how hard these last two holdout regions are to finish off polio.
I wouldn't classify polio as making a resurgence, last numbers I saw were cases in the dozens. In 30 years known cases have gone from the hundred of thousands to less than 100. With all the cars being in two small pockets of Afghanistan/Pakistan . The issues you brought up have been a constant concern and are not anything new, every other Muslim country has successfully utilized and eradicated polio with the same vaccines.
I wouldn't classify polio as making a resurgence, last numbers I saw were cases in the dozens. In 30 years known cases have gone from the hundred of thousands to less than 100. With all the cars being in two small pockets of Afghanistan/Pakistan . The issues you brought up have been a constant concern and are not anything new, every other Muslim country has successfully utilized and eradicated polio with the same vaccines.