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Published on: July 26, 2019
Trends and patterns in vaccination objection, Australia, 2002-2013.
Frank H Beard1, Brynley P Hull2, Julie Leask3
1National Centre for Immunisation Research and Surveillance, The Children's Hospital at Westmead, Sydney, NSW frank.beard@health.nsw.gov.au.
Registered vaccination objection rates in Australia saw a slight increase between 2002 and 2013. Overall vaccination objection impact remains stable, with access barriers and incomplete records affecting coverage.
Area of Science:
- Public Health
- Epidemiology
- Immunisation Policy
Background:
- Vaccination objection poses a challenge to achieving herd immunity.
- Understanding geographic and demographic trends in vaccination objection is crucial for targeted public health interventions.
Purpose of the Study:
- To investigate the geographical and demographic patterns of vaccination objection in Australia.
- To analyze trends in registered vaccination objections over time.
Main Methods:
- Cross-sectional analysis of Australian Childhood Immunisation Register (ACIR) data from 2002 to 2013.
- Examined immunisation status in relation to registered objections, area remoteness, and socio-economic status.
- Utilized Medicare registration data as a proxy for overseas-born children.
Main Results:
- The proportion of children with registered vaccination objections increased from 1.1% in 2002 to 2.0% in 2013, concentrated in regional areas.
- Lower socio-economic areas showed lower registered objection rates but higher rates of incomplete vaccination, indicating access and logistical issues.
- A significant proportion of proxy overseas-born children had unrecorded vaccination status, predominantly residing in urban centers.
Conclusions:
- Registered vaccination objection rates have slightly increased, but the overall impact on vaccination coverage has remained stable since 2001.
- Incomplete records, healthcare access barriers, and missed vaccination opportunities are significant contributors to suboptimal vaccination coverage.
- Public health strategies should address these systemic issues beyond just registered objections.
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