That's not how this works.

Polio vaccination rate had been high enough for decades that even the unvaccinated (either voluntarily or those who can't be vaccinated due to medical reasons) were protected due to herd immunity, so polio cases were reduced to nearly nil in the US (including NYC) for years

(see chart...I know it ends in 1975 but I'm writing this on the go and this is what i can find in a hurry... but anyway the point is that it's been pretty damn low since then: https://www.rescuepost.com/.a/6a00d8357f3f2969e201b7c829fd15970b-600wi )

Due to antivaxxers the vaccination rate has dropped enough that herd immunity has been lost and polio cases are rebounding for the first time since the mid 20th century.