I don't normally get involved in these threads but really, OP:
However, any parent who does not vaccinate their children for whatever reason needs to be aware of the uncalculable risk they are putting other peoples' children in...
Of course people know. They don't generally just not vaccinate because they can't be arsed, now do they? Indeed, most people who choose not to vaccinate are better informed than those who do, IME.
And for the record, my two are vaccinated.
By the by, in the US I thought it was compulsory to vaccinate in order to get a school place? Genuine question.