2008-04-05-世界卫生组织-Meningitis_Week_14,_31_March_2008_to_6_April_2008_9页_551kb

MDSC Meningitis Weekly Bulletin Summary

Week 14 (31 March - 6 April 2008)

I. Epidemiological Situation

• Countries reported: Benin, Burkina Faso, Cote d'Ivoire, Mali, Niger, Nigeria, Togo
• Total cases: 1,775 cases
• Total deaths: 142 deaths (8.0% overall lethality)
• Most affected districts/regions:
  • Burkina Faso: 5 epidemic districts (Barsalgho, Gourcy, Houndé, Sig-Noghin, Titao) and 14 alert districts
  • Mali: 3 epidemic weeks and 2 alert districts
  • Nigeria: 14 LGAs in epidemic phase
  • Togo: 14 weeks in epidemic phase/weeks notified

II. Cumulative Data (Weeks Notified 01-14 2008)

• Most affected countries: Burkina Faso (7184 cases, 17 epidemic districts) and Nigeria (2711 cases, 28 epidemic districts)
• Need for updated data: Central African Republic, Chad, DRC
• Silent country: Cameroon
• Case Fatality Rate (CFR): Burkina Faso (9.9%), Cote d'Ivoire (16.2%), Niger (5.7%), Nigeria (9.0%)

III. Laboratory Results

• Meningococcus group A (NmA): Dominant pathogen (Burkina Faso: 94 samples, Niger: 497 samples)
• Testing limitations: Very few samples tested, except Niger

IV. Cartographical Representation

• Burkina Faso, Mali, Niger, Nigeria, and Togo show high attack rates
• Epidemic threshold: Clearly demarcated in the maps

V. Epidemiological Trends (2007-2008)

• Comparison by country: Included in the report