2011-01-29-世界卫生组织-Meningitis_Week_04,_24_-_30_January_2011_7页_673kb

Summary of Meningitis Weekly Bulletin (Week 04, 2011) and Synthesis (Weeks 1-4, 2011)

Epidemiological Situation for Week 04 (January 24-30, 2011)

• Total meningitis cases: 157 across multiple countries, with Burkina Faso reporting the highest (115 cases).
• Deaths: 17 total, with Burkina Faso and Togo experiencing deaths (12 and 4, respectively).
• Lethality rates: Varying by country, averaging 10.8%; no districts crossed epidemic thresholds.
• Benin, Burkina Faso, Mali, Niger, and Togo reported cases; laboratory identification was attempted but not all data confirmed pathogens.
• In Burkina Faso, cases included unvaccinated and vaccinated children, with surveillance noting 2 additional cases since the previous week.

Synthesis for Weeks 1-4, 2011 (Cumulative Data)

• Overall cases: 856 reported from Benin, Burkina Faso, Ghana, Mali, Niger, and Togo; total deaths: 125 (14.6% lethality).
• Countries under enhanced surveillance: Burkina Faso and Mali demonstrated case-based monitoring, while silent countries (e.g., Cameroon, Central African Republic) were encouraged to update weekly data.
• Recommendations: Strengthened surveillance for meningitis, particularly for countries using MenAfriVac, and timely laboratory confirmation for suspected cases.

Key Comments

• Laboratory data delays noted, but Streptococcus pneumoniae (Spn) remained the predominant pathogen, with Neisseria meningitidis serogroup W135 prominent in Chad (not included in this week's data).
• Epidemic onset this year, with no large-scale outbreaks reported.
• Graphical representations (maps and trends) provided for attack rates, but specific data not detailed here.

Countries under surveillance are urged to improve data submission and monitoring to track the epidemic effectively.