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The epidemiological impact of antimeningococcal B vaccination in Cuba

A P Rodriguez1, F Dickinson, A Baly

  • 1Instituto de Medicina Tropical 'Pedro Kourí', La Habana, Cuba. antonio@ipk.sld.cu

Memorias Do Instituto Oswaldo Cruz
|August 13, 1999
PubMed

Insights

The VA-MENGOC-BC vaccine significantly reduced invasive meningococcal disease (IMD) incidence. Post-vaccination rates were lower, particularly in younger age groups, demonstrating the vaccine's epidemiological impact.

Area of Science:

  • Epidemiology
  • Vaccinology
  • Public Health

Background:

  • Invasive meningococcal disease (IMD) poses a significant public health challenge.
  • Understanding the impact of vaccination campaigns is crucial for disease control.

Purpose of the Study:

  • To compare the incidence of IMD before and after the nationwide VA-MENGOC-BC vaccination program initiated in 1989.
  • To assess the epidemiological impact of the VA-MENGOC-BC vaccine on IMD morbidity.

Main Methods:

  • Comparative analysis of IMD incidence density (ID) during pre-vaccination (1984-1988) and post-vaccination (1989-1994) periods.
  • Statistical analysis including breakpoint detection (Chow test) and geospatial comparison using maps.
  • Stratification of data by age groups to identify specific impacts.

Main Results:

  • Pre-vaccination ID (8.8/10^5 person-years) was higher than post-vaccination ID (6.5/10^5 person-years).
  • A significant decrease in ID was observed between 1989 and 1990, particularly in children under 1 year old and adolescents (5-19 years).
  • Geographic mapping revealed a reduction in IMD across all municipalities post-vaccination.

Conclusions:

  • The VA-MENGOC-BC vaccination campaign demonstrated a substantial epidemiological impact in reducing IMD morbidity.
  • The vaccine proved effective in lowering disease incidence, especially in younger populations.
  • Nationwide vaccination strategies are vital for controlling and preventing invasive meningococcal disease.

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