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NSW Annual Immunisation Coverage Report, 2009
Brynley Hull1, Aditi Dey, Deepika Mahajan
1National Centre for Immunisation Research and Surveillance,The Children's Hospital at Westmead. brynleyh@chw.edu.au
Insights
This report establishes baseline immunisation coverage in NSW, Australia, reaching targets for young children but not 5-year-olds. Delayed vaccine uptake affects Aboriginal children, while adult and adolescent vaccination rates show mixed trends.
Area of Science:
- Public Health
- Epidemiology
- Immunisation Science
Background:
- The Australian Childhood Immunisation Register (ACIR) provides crucial data for monitoring vaccination trends.
- Understanding immunisation coverage is vital for maintaining herd immunity and preventing vaccine-preventable diseases.
- This report serves as the first in an annual series to track immunisation trends in New South Wales (NSW).
Purpose of the Study:
- To document trends in NSW immunisation coverage using ACIR data up to 2009.
- To assess coverage for childhood, adult (influenza, pneumococcal), and adolescent (HPV, dTpa, varicella) vaccines.
- To establish baseline data for future comparisons and monitoring of immunisation progress.
Main Methods:
- Utilised data from the Australian Childhood Immunisation Register (ACIR).
- Incorporated data from the NSW Health Survey and NSW School Immunisation Program.
- Calculated population coverage measures for various vaccine types and age groups.
Main Results:
- Immunisation targets met for children at 12 and 24 months, but not at 5 years.
- Delayed vaccine receipt identified as an issue for vaccines recommended for Aboriginal children.
- Increasing pneumococcal vaccination in the elderly, though lower than influenza coverage; varied adolescent vaccine coverage.
Conclusions:
- This analysis provides essential baseline immunisation data for NSW.
- Future reports can use this baseline to monitor improvements in vaccine coverage.
- Achieving immunisation at the earliest appropriate age should be a public health priority.
Aims:
This is the first in a series of annual immunisation coverage reports that document trends in NSW for a range of standard measures derived from Australian Childhood Immunisation Register data, including overall coverage at standard age milestones and for individual vaccines. This report includes data up to and including 2009.
Methods:
Data from the Australian Childhood Immunisation Register, the NSW Health Survey and the NSW School Immunisation Program were used to calculate various measures of population coverage relating to childhood vaccines, adult influenza and pneumococcal vaccines and adolescent vaccination, respectively.
Results:
Immunise Australia Program targets have been reached for children at 12 and 24 months of age but not for children at 5 years of age. Delayed receipt of vaccines is an issue for vaccines recommended for Aboriginal children. Pneumococcal vaccination in the elderly has been steadily rising, although it has remained lower than the influenza coverage estimates. For adolescents, there is better coverage for the first and second doses of human papillomavirus vaccine and the dose of dTpa than for varicella.
Conclusion:
This comprehensive analysis provides important baseline data for NSW against which future reports can be compared to monitor progress in improving immunisation coverage. Immunisation at the earliest appropriate age should be a public health goal for countries such as Australia where high levels of vaccine coverage at milestone ages have been achieved.
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