That level of tolerance has traditionally been given, but it has recently begun to be abused. A few fringe religious nuts who want to abstain from modern medic

That level of tolerance has traditionally been given, but it has recently begun to be abused. A few fringe religious nuts who want to abstain from modern medicine are fine; they don't threaten herd immunity. However as soon as not vaccinating your children becomes the trendy thing for young parents to do, it can become necessary to take a hardline stance in order to protect those who do not have the luxury of choosing to be vaccinated.