No. Even if it makes no logical sense, they still may have religious reasons for it, and confiscating the kids because of that would interfere with Freedom of Religion. I understand a government that isn't all-powerful is a foreign concept to this forum, but people still have their rights. Children aren't the property of muh guvment, and this very idea that they can force parents to put something in their kid's bodies is sickening.
Children aren't the property of muh parents either. Preventing vaccination for religious reasons is no more "Freedom of Religion" than sacrificing one's children to Moloch is freedom of religion or pedophilic sexual rituals is freedom of religion.