The article seems to not mention this.
Sadly it still doesn't stop entire communities of well-off antivaxxers forming, these particular areas are now ravaged by whooping cough outbreaks, a disease that was almost eliminated ten years ago.
So what percentage are we talking? Single digits, I hope.
https://www.theage.com.au/national/victoria/melbournes-antiv...
The next pressure point will be that if parents don’t vaccinate their children, child-care centres will be forced to refuse to take children. This will actually work because the vast majority of these wealthy suburbs have both parents working, and they must use child care.
So HPV vaccine is now on the national immunisation program which your child must be up to date with to claim family tax benefits.
https://www.humanservices.gov.au/individuals/enablers/immuni...
Nowadays, Texas shows up in the news for the converse reasons: alarming growth in maternal mortality during childbirth [2].
[1] https://www.washingtonpost.com/politics/rick-perry-reverses-... [2] http://time.com/5088014/maternal-mortality-pregnancy/