Letter to the editor: Australian immunisation registers: established foundations and opportunities for improvement. (Author reply: pii: 20179).

In their recent article on the Australian immunisation registers [1] Chin et al. recognise the potential value of linking immunisation registers with healthcare outcome data for public health benefit by enabling rapid investigation of population-level vaccine safety and effectiveness. While the national Australian Childhood Immunisation Register (ACIR) has been linked on two occasions to examine vaccine safety, [2,3] it has not been linked to health outcome data to investigate vaccine effectiveness.

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