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Related Experiment Videos

Three fatal pneumococcal polysaccharide vaccine failures.

J N Hanna1, D J Wenck, D N Murphy

  • 1Tropical Public Health Unit, Queensland Health, Cairns. jeffery_hanna@health.qld.gov.au

The Medical Journal of Australia
|November 4, 2000
PubMed
Summary

Indigenous Australians experienced fatal invasive pneumococcal disease despite vaccination. Pneumococcal isolates matched vaccine serotypes, suggesting potential vaccine failure in vulnerable populations.

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Area of Science:

  • Infectious Diseases
  • Immunology
  • Public Health

Background:

  • Invasive pneumococcal disease (IPD) remains a significant global health concern.
  • Pneumococcal polysaccharide vaccine (PPSV) is recommended for adults, particularly those at higher risk.
  • Indigenous Australian populations face a disproportionately high burden of IPD.

Observation:

  • Three Indigenous Australian adults succumbed to IPD.
  • All patients had received the PPSV an average of 18 months prior to infection.
  • Isolates from patients contained pneumococcal serotypes covered by the vaccine.

Findings:

  • Vaccine failure occurred despite vaccination with PPSV.
  • The identified pneumococcal serotypes were within the vaccine's coverage.

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  • Heavy alcohol consumption was noted in two patients, and recent heavy intake in the third.

    • Implications:

    • The study highlights potential limitations of current PPSV vaccination schedules in Indigenous Australians.
    • Alcohol consumption may be a critical factor influencing vaccine effectiveness against IPD.
    • Further research into optimal vaccination strategies and schedules is warranted to minimize vaccine failures in high-risk groups.