I'm not familiar with Australia's stance on religious freedom, but I suspect a mandatory vaccination in the States would come under fire on religious grounds.
Say, for example, you were a member of the Church of Christ, Scientist, and faith healing was a major tenet of your religious system. What then? Can
the government trample your faith like that?
Granted, I have no interest in converting (and no interest in taking the shot), so this is all hypothetical. But has anyone explored the implications
of the "freedom of religion" route?