2005-04-09-世界卫生组织-Meningitis_Week_14,_4_April_2005_to_10_April_2005_8页_729kb

Epidemiological Summary - Meningitis (WHO MDSC, Week 14, 2005)

I. Epidemiological Situation - Week 14:

• Countries Reporting: Benin, Burkina Faso, Cameroon, Central African Republic, Côte d'Ivoire, Ethiopia, Ghana, Mali, Niger, Nigeria, Republic of Congo, Chad, Togo.
• Total Cases: 8197
• Total Deaths: 1323
• Case Fatality Rate (CFR): 16.1%
• Alerts: 10 epidemic alerts ongoing.
• Completeness: >70% for most districts; notably underreported in Togo (≈70%).
• Laboratory Data: Primarily Neisseria meningitidis W135 and Hib (Hemophilus influenzae type B). Testing identified various pathogens; most results negative or pending.

II. Commentary:

• Ethiopia & Mali datasets updated.
• Ongoing epidemic in Ethiopia and Mali.
• Majority of reporting countries reported stable conditions.

III. Summary of Meningitis Situation (Reported Weeks):

• District-Level Analysis: For regions with data, ~90% of districts reported, varying CFRs (e.g., Togo: 10.8%, others: 0-21.3%).
• Highest Attack Rates: Different districts in Benin, Burkina Faso, Côte d'Ivoire, etc., showed highest rates during peak seasons (varying weeks).

IV. Comparative Trends (2004-2005):

• Visual Comparison: Provided via graphs comparing cases-by-week across several countries (Bénin, Burkina Faso, Republic of Congo, Côte d'Ivoire, Ghana, Mali, Niger, Chad, Togo, Nigeria).

V. Key Observations:

• Meningitis cases remain high across multiple African nations.
• Variable case fatality rates highlight disparities in outcomes or infectiousness by region.
• Laboratory data crucial for understanding causation, but some gaps noted.
• Comparison with previous year indicates continued burden (though some fluctuations noted in graphs).