I refer the honourable member to my remarks of a week or so ago, when I emphasised strongly and repeatedly that parents who choose not to vaccinate their children put their own children's health and the health of everybody else's children at risk. We have increased the pressure on this issue considerably. We have written to every state and every territory and sought their support to ensure that we go further than simply saying, 'no jab, no pay'—which has been a very successful policy and has resulted in an additional 200,000 children being vaccinated.