2008-06-28-世界卫生组织-Meningitis_Week_26,_23_June_2008_to_29_June_2008_13页_609kb

MDSC Meningitis Weekly Bulletin Summary - Week 26, 2008

I. Epidemiological Situation of Week 26

• Total cases: 155 across various African countries.
• Total deaths: 15, with an overall lethality rate of 9.7%.
• Countries with notable data:
  • Benin: 9 cases, 0 deaths.
  • Burkina Faso: 31 cases, 1 death (3.2% lethality).
  • Centrafrique: 7 cases, 1 death (14.3% lethality).
  • Cote d'Ivoire: 6 cases, 3 deaths (50.0% lethality).
  • Others below average impact in this week.
• Laboratory data includes PCR, LATEX, and culture methods, with specific pathogen counts provided.

II. Synthesis of Weeks 1-26

• Cumulative cases: 28,901 in the region.
• Cumulative deaths: 2,736, with an overall lethality rate of 9.5%.
• Top impacted countries: Burkina Faso, Nigeria, Republic of Congo, and Niger, indicating low lethality in some and high in others (e.g., 26.6% in Centrafrique).
• Monitoring note: Cameroon did not report data during the season, and laboratory confirmation remains a challenge.

III. Pathogen Identification

• PCRs and culturing identified Neisseria meningitidis A as predominant in epidemic districts.
• Other pathogens: Limited cases of NmW135, Streptococcus pneumoniae, and Haemophilus influenzae.
• Burkina Faso and others showed high pathogen detection rates.

IV. Additional Notes

• Weekly bulletins will transition to monthly from July-August-September.
• Epidemic thresholds not applicable for countries outside the meningitis belt, such as Republic of Congo.
• Commentary highlights global lethality variance and ongoing surveillance challenges.