We've an "anti-vax mommy" in the 'burb. Probably more than one. But one that's VOCAL in her "belief". Even our local pharmacist mommy cannot get "Anti-vax mommy" to allow her to vaccinate her children, for free. She's been told about herd immunity, and the danger she is creating for other children. We are returning, more rapidly than I imagined, to "The DARK Ages".
It is quite the conundrum. Education is the only solution though.