2013-06-01-世界卫生组织-Meningitis_weekly_bulletin_27_May_-_2_June_2013_12页_1mb

Meningitis Weekly Bulletin Summary (Week 22, 2013)

Region: West Africa
Date Range: May 27 - June 2, 2013

I. Epidemiological Situation (Week 22)

• District Alerts: Benin (District Tanguieta: AR 7.7%, District Materi: crossed alert at AR 5.0%).
• Total Cases: 327 suspected meningitis cases.
• Total Deaths: 24 deaths.
• Case Fatality Rate (CFR): 7.3%.
• Alert/Epidemic Districts: No districts were classified as epidemic; several were in alert.
• Completeness: Data completeness was incomplete for some countries (e.g., 53.5% for Ghana).

II. Synthesis (Weeks 1-22)

• Cumulative Cases: 10,740 suspected meningitis cases.
• Cumulative Deaths: 995 deaths.
• Overall CFR: 9.3%.
• Countries: Data covered 15 countries, including partially/fully vaccinated ones (e.g., Nigeria, Democratic Republic of the Congo).
• Vaccination Status: Bolton, Burkina Faso, Mali, Niger, Senegal, and Sudan were fully vaccinated with MenAfriVac; Ghana, Nigeria, and others were partially vaccinated or not applicable.

III. Laboratory Data (Weeks 1-22)

• Samples Tested: 2,788 samples.
• Primary Pathogens Found: Streptococcus pneumoniae (317 cases), Haemophilus influenzae type B (Hib) (3 cases), and Neisseria meningitidis W135 (177 cases) were the most common laboratory-confirmed pathogens.

IV. Overall Notes

• This weekly update provides epidemiological data and laboratory findings for meningitis surveillance in the region during week 22, 2013.