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Invasive pneumococcal disease in central Australia

J Trotman1, B Hughes, L Mollison

  • 1Department of Medicine, Alice Springs Hospital, Northern Territory, Australia.

Clinical Infectious Diseases : an Official Publication of the Infectious Diseases Society of America
|June 1, 1995
PubMed
Summary

Invasive pneumococcal disease (IPD) is a significant health issue, particularly for Aboriginal children in central Australia, who experience the world's highest incidence rates. Vaccination is recommended to reduce IPD admissions and deaths.

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Area of Science:

  • Public Health
  • Infectious Diseases
  • Epidemiology

Background:

  • Invasive pneumococcal disease (IPD) poses a substantial health burden globally.
  • Certain populations, including Indigenous communities, face disproportionately high IPD rates.
  • Understanding the epidemiology of IPD in specific regions is crucial for targeted interventions.

Purpose of the Study:

  • To determine the incidence and characteristics of invasive pneumococcal disease in central Australia over a two-year period.
  • To identify high-risk populations for IPD within the study region.
  • To evaluate the potential impact of vaccination programs on reducing IPD burden.

Main Methods:

  • A hospital-based retrospective review of all invasive pneumococcal disease cases.

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  • Data collection included patient demographics, clinical presentation, serotyping of isolates, and outcomes.
  • Incidence rates and relative risks were calculated, comparing Aboriginal and non-Aboriginal populations.

    • Main Results:

    • A total of 79 cases of IPD were identified in 78 patients.
    • The highest incidence was observed in Aboriginal children under 5 years (1,025 per 100,000).
    • Aboriginal individuals had a 31.6 times higher relative risk of IPD compared to non-Aboriginal individuals. Pneumonia was the most common manifestation (82%), and 10.1% of patients died, all with identifiable risk factors. Serotyping indicated broad vaccine coverage.

    Conclusions:

    • Aboriginal people in central Australia experience the highest reported rates of invasive pneumococcal disease globally.
    • Pneumonia is the leading clinical presentation of IPD in this population.
    • Implementing a vaccination program in central Australia is strongly recommended to decrease IPD-related hospital admissions and mortality.