NCIRS plays a pre-eminent role in the analysis and reporting of data from the Australian Childhood Immunisation Register (ACIR) and the use of these data for research, surveillance and evaluation. ACIR data also contributes to a range of other activities undertaken at the Centre, including program evaluation and disease modelling. NCIRS receives de-identified data from the ACIR every three months from Medicare Australia.
Summarised here are current studies and recent completed studies based primarily on ACIR data.
Annual Immunisation Coverage Report, Australia
In recent years, NCIRS has published a number of papers and reports that have examined various aspects of immunisation coverage in Australia including timeliness of immunisation, small area coverage reporting and reporting of coverage for NIP vaccines not routinely reported in Communicable Diseases Intelligence. An annual immunisation coverage summary report, analysing data from the ACIR, aims to focus the attention of policy makers and others on the most important trends and significant issues that have arisen in the past year.
The most recently available annual report for Australia is:
Annual Immunisation Coverage Report, New South Wales
The third annual report documents trends in immunisation coverage in NSW for children, adolescents and the elderly, to the end of 2011. Data from the Australian Childhood Immunisation Register, the NSW School Immunisation Program and the NSW Population Health Survey were used to calculate various measures of population coverage. During 2011, greater than 90% coverage was maintained for children at 12 and 24 months of age. For children at 5 years of age the improvement seen in 2010 was sustained, with coverage at or near 90%. For adolescents, there was improved coverage for all doses of human papillomavirus vaccine, both doses of hepatitis B vaccine, varicella vaccine and the dose of diphtheria, tetanus and acellular pertussis given to school attendees in Years 7 and 10. Pneumococcal vaccination coverage in the elderly has been steadily rising, although it has remained lower than the influenza coverage estimates. This report provides trends in immunisation coverage in NSW across the age spectrum. The inclusion of coverage estimates for the pneumococcal conjugate, varicella and meningococcal C vaccines in the official coverage assessments for ‘fully immunised’ in 2013 is a welcome initiative.
This third report for New South Wales can be found here:
Overview of ACIR first decade 1996–2005
The ACIR is a major initiative in Australia and of great interest internationally. Few data are available, especially to groups outside Australia, in a readily accessible form. This project summarised the development of the ACIR and changes in childhood vaccine coverage in Australia in relation to Immunise Australia initiatives. A literature review and collation of NCIRS data was undertaken. A paper was published in Vaccine in 2009.
Impact of the introduction of rotavirus vaccine on the timeliness of other scheduled vaccines: The Australian experience
Using data from the Australian Childhood Immunisation Register (ACIR), coverage and timeliness of rotavirus vaccines and changes in timeliness of other infant vaccines following rotavirus vaccine introduction was examined. Final dose rotavirus coverage reached 83% within 21 months of program commencement but remained 7% lower than other vaccines due in infancy. Coverage was 11-17% lower in Indigenous infants. Following rotavirus vaccine introduction, there were improvements in timeliness of receipt of all doses of DTPa-containing and 7-valent pneumococcal conjugate vaccines. High population coverage can be attained with rotavirus vaccines, even with adherence to strict upper age restrictions for vaccine dose administration. Rotavirus vaccine introduction appears to have impacted upon the timeliness of other concomitantly scheduled vaccines.
A paper describing this study was published in Vaccine in 2013: