2006-04-01-世界卫生组织-Meningitis_Week_13,_27_March_2006_to_2_April_2006_8页_787kb

MDSC Meningitis Weekly Bulletin Summary - Week 13, 2006

I. Epidemiological Situation (Week 13, 2006)

1. Reported Countries: Benin, Burkina Faso, Côte d'Ivoire, Guinea, Mali, Niger, Tchad, Togo.
2. District-Level Statistics:
   • Burkina Faso: 24 districts in epidemic phase, 11 districts in alert phase.
   • Mali: 1 district in epidemic (Sélingué), 3 districts in alert.
   • Niger: 3 districts in epidemic, 2 districts in alert.
   • Guinea: 1 district (Mandiana) in epidemic.
   • Additional details on caseload, deaths, lethality rates, and specific pathogen counts (NmA, Hib, Pneumo) per district are provided in the original table.

II. Summary of Epidemiological Situation (2006, Weeks 01–13)

1. Countries with Epidemic/Districts in Alert: Burkina Faso (28 districts), Niger (4 districts), Mali (3 districts), Côte d'Ivoire (1 district), Guinea (1 district).
2. Cumulative Data: Total cases reported across 5 countries (excluding some missing data) reached 15,107, with 1,427 deaths, averaging a lethality rate of 9.4%.
3. Key Observations: Burkinabé accounted for the most cases and deaths.

III. Pathogen Identification

1. Meningococcal Serogroups: Detection included Neisseria meningitidis (Nm), specifically NmA, NmW135, Hib, and others (e.g., NmX emergence in Niger).
2. PCR/Culture Findings: Data on cerebrospinal fluid (CSF) samples and pathogen types by country are detailed in the table, highlighting findings like NmX's rising prevalence in Niger (22.9% by Week 13, 2006).

IV. Graphical Representations

• Figures 1 & 2: Show epidemiological mappings by district for Week 13 and cumulative trends from Week 01 to 13 using the highest weekly attack rates.
• Figures 3–7: Display comparative weekly trends for 2005–2006 in specific countries (Côte d'Ivoire, Chad, Central African Republic, Ethiopia, Togo).

Contact information for reporting is included at the bottom.