2005-05-14-世界卫生组织-Meningitis_Week_19,_9_May_2005_to_15_May_2005_8页_880kb

Epidemiological Summary: Meningitis Surveillance Week 19, 2005

Overview

This report details the meningitis surveillance data for week 19 (May 9–15, 2005) under enhanced WHO surveillance. The data includes cases, deaths, case fatality rates (CFR), alert and epidemic districts, treatment completeness, and identified pathogens. Figures provide maps and trends for context, showing attack rates and comparisons with the previous year.

Week 19 Epidemiological Situation

• Total cases: 136 across several countries; Tchad, Mali, and Niger had significant cases.
• Deaths: 22 recorded; highest in Tchad (6 deaths) and Chad accounted for most deaths and alerts.
• Alert and epidemic districts: Chad reported alerts and epidemics; districts like Faya, Biltine, and Iriba had high attack rates (e.g., 13.4 and 10.1 cases per 100,000 inhabitants). Completion rates varied by district.
• Pathogens: Identified using PCR, Latex, and culture; no major changes reported.

Synthesis (Weeks 1–19, 2005)

• Cumulative cases: 9,876 total cases reported; Tchad had the highest cases (949). Overall CFR was 15.4%.
• Epidemic districts: Tchad had 5 epidemic districts, increasing the total number to 15 across monitored countries.
• Alerts: 13 districts alerts noted, with Kenya and Burundi also impacted.

Laboratory Findings

• Pathogens were identified via PCR, Latex, and culture; minimal changes in lab results.

Graphical Representation

• Maps (Figures 1–2) show attack rates and cumulative trends by district.
• Trends (Figure 3) compare 2004–2005 cases: Countries like Tchad and Burundi saw fluctuations; annual cases peaked in some regions, indicating ongoing transmission.