2007-03-17-世界卫生组织-Meningitis_Week_11,_12_March_2007_to_18_March_2007_8页_498kb

报告摘要

Time Period: March 12-18, 2007.
Total cases reported: 3,588 across 13 African countries.
Total fatalities: 233, resulting in an overall case fatality rate of 6.5%.
Notable country: Burkina Faso reported the highest number of cases (463) and fatalities (218), with 6.3% lethality. It had 28 districts in epidemic phase and 11 in alert phase.
Region of concern: Burkina Faso, Central African Republic, Ghana, Nigeria, and others experienced high transmission rates.
Other pathogens: Neisseria meningitidis A predominated in Burkina Faso, while other species were identified in various countries.

Cumulative cases: 13,840 across 13 countries.
Cumulative deaths: 1,280, with an overall lethality rate of 9.2%.
Burkina Faso dominated reporting (10,796 cases) and continued high activity, covering all weeks notified (weeks 1-11).
Countries with significant but lower activity: Ivory Coast (2 epidemic districts) and others, like Nigeria, Chad, and Togo, each had 1 district in epidemic phase.
Silent countries: Cameroon and Ethiopia showed no activity during weeks 1-11.
High lethality noted in Benin, Central African Republic, Ghana, and Ivory Coast.

Data from PCR, Lateral Flow Assay (L.F.A.), and Culture methods.
Burkina Faso identified primarily Neisseria meningitidis A in most cases.
Other pathogens: Enhanced monitoring in countries like Niger showed increases in certain strains.

Figures included maps illustrating infection rates by district and cumulative attack rates for weeks 1-11, showing geographical hotspots and trends.
A figure compared epidemiological trends between 2006 and 2007 for Nigeria and Ghana, highlighting case distributions.

Data quality issues: Figures based on reported weekly data, subject to revision after verification.
Commentary: Most cases from Burkina Faso, pockets of high lethality in specific regions, with external countries having undefined alert thresholds.

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