2010-03-20-世界卫生组织-Meningitis_Week_11,_15-21_March_2010_9页_770kb

Summary of MDSC Meningitis Weekly Bulletin, Week 11, 2010

Epidemiological Situation Week 11 (15-21 March 2010)

• Total cases reported: 1,263 across multiple countries in West and Central Africa.
• Notable findings: Burkina Faso had one district in epidemic phase (Séguenega with an attack rate of 19.0 per 100,000) and eight districts under alert. Niger had one epidemic district (Maradi with 21.5 cases per 100,000). Chad reported two epidemic districts and six alert districts. Death rates varied, with high lethality in countries like Burkina Faso (11.3%) and Togo (24.4%).
• Laboratory data pending, but brief commentary indicates attack rates based on PCR, LATEX, and culture methods.

Synthèse for 2010, Weeks 1-11

• Cumulative cases and deaths: 9,679 cases and 1,125 deaths reported.
• Comparison with 2009: Nigeria showed reduced case numbers this season compared to the same period in 2009. Death rates remained significant.
• Alerts: Multiple districts crossed epidemic thresholds, with varying lethality rates across countries.

Laboratory Findings

• Pathogens identified: Neisseria meningitidis A predominant overall, except in Niger and Ghana where NmW135 was more common.
• Total laboratory-confirmed cases via PCR, LATEX, and culture methods reached 1,005 specimens.

Graphical Data

• Available graphs (not included in text) display cumulative attack rates and trends for weeks 1-11, 2010, based on weekly data from districts.