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Published on: August 7, 2017
Morbidity due to acute lower respiratory infection in children with birth defects: a total population-based linked
Khadra A Jama-Alol, Hannah C Moore1, Peter Jacoby
1Telethon Kids Institute, The University of Western Australia, Perth, Western Australia. hannah.moore@telethonkids.org.au.
Insights
Children with birth defects have higher rates of acute lower respiratory infection (ALRI) hospitalizations before age two. Targeted vaccination and immunoprophylaxis can help reduce these hospitalizations.
Area of Science:
- Pediatric Health
- Birth Defects Research
- Infectious Disease Epidemiology
Background:
- Acute lower respiratory infections (ALRIs) are a primary cause of childhood hospitalization.
- Birth defects affect 5% of live births in Western Australia (WA).
- The link between birth defects and ALRI hospitalization risk was previously unestablished.
Purpose of the Study:
- To investigate the association between birth defects and ALRI hospitalizations in children.
- To quantify the increased risk of ALRI hospitalizations in children with various birth defects.
Main Methods:
- A retrospective cohort study analyzed 245,249 singleton births in WA from 1996-2005.
- Hospitalization data were linked with the WA Register of Developmental Anomalies.
- Negative binomial regression adjusted for risk factors to assess ALRI hospitalization rates.
Main Results:
- Children with birth defects had significantly higher ALRI hospitalization rates (IRR 2.0-2.3) compared to those without.
- Aboriginal children with birth defects showed higher rates (37%) of ALRI admission than non-Aboriginal children (9%).
- Down syndrome cases exhibited the highest ALRI hospitalization rate (IRR 8.0); multiple defects tripled the risk.
Conclusions:
- Children with birth defects face elevated risks of ALRI hospitalization within their first two years.
- Improving vaccination and immunoprophylaxis for specific birth defect categories is crucial for reducing ALRI hospitalizations.
Background:
Acute lower respiratory infections (ALRIs) are leading causes of hospitalisation in children. Birth defects occur in 5% of live births in Western Australia (WA). The association between birth defects and ALRI hospitalisation is unknown.
Methods:
We conducted a retrospective cohort study of 245,249 singleton births in WA (1996-2005). Population-based hospitalisation data were linked to the WA Register of Developmental Anomalies to investigate ALRI hospitalisations in children with and without birth defects. We used negative binomial regression to estimate associations between birth defects and number of ALRI hospitalisations before age 2 years, adjusting for known risk factors.
Results:
Overall, 9% of non-Aboriginal children and 37% of Aboriginal children with birth defects had at least one ALRI admission before age 2 years. Aboriginal children (IRR 2.3, 95% CI: 1.9-2.8) and non-Aboriginal children (IRR 2.0, 95% CI: 1.8-2.2) with birth defects had higher rates of hospitalisation for an ALRI than children with no birth defects. Rates of ALRI hospitalisation varied by type of defect but were increased for all major birth defects categories, the highest rate being for children with Down syndrome (IRR 8.0, 95% CI: 5.6-11.5). The rate of ALRI hospitalisation was 3 times greater in children with multiple birth defects than in those with isolated defects.
Conclusions:
Children with birth defects experience higher rates of hospitalisation for ALRIs before age 2 years than children with no birth defects. Optimal vaccination coverage and immunoprophylaxis for specific categories of birth defects would assist in reducing hospitalisation rates for ALRI.
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