The cited article on WP ( https://www.jpost.com/diaspora/ultra-orthodox-zip-codes-have-some-of-new-yorks-worst-vaccination-rates-671058 https://www.jpost.com/di

The cited article on WP ( https://www.jpost.com/diaspora/ultra-orthodox-zip-codes-have-some-of-new-yorks-worst-vaccination-rates-671058 https://www.jpost.com/diaspora/ultra-orthodox-zip-codes-have... ) notes that measles vaccination rates were around 70%, vs 99% for the rest of the state. Given the vaccine schedule, it's pretty likely that if you're a kid not vaccinated for measles, you're not vaccinated for polio either.