2011-01-22-世界卫生组织-Meningitis_Week_03,_17_-_23_January_2011_7页_664kb

Epidemiological Situation Week 03 (17-23 January 2011): High meningitis caseload reported in countries like Burkina Faso and Tchad. Burkina Faso's Saponé district is in alert with 5.3 cases per 100,000 inhabitants. Tchad's Laokassy district is in epidemic with an attack rate of 19.8 cases per 100,000. Total cases: 285, deaths: 39 (13.7% lethality).

Synthesis for Weeks 01-03 2011 (Cumulative): Overall, 699 cases and 108 deaths, slightly below 2010 figures (784 cases, 101 deaths). Five districts in four countries (Burkina Faso, Ghana, Chad, Togo) surpassed alert thresholds; Chad has one district in epidemic for two consecutive weeks. Countries introduced "MenAfriVac" (Burkina Faso, Mali, Niger), requiring case-based surveillance.

Pathogens: Streptococcus pneumoniae (Spn) is predominant in most countries. In Tchad, Spn and Neisseria meningitidis A coexist, while NmW135 is dominant in Niger.

This bulletin also includes maps for attack rate visualization and weekly comparisons, but no specific data is provided. Contact details for further information are listed.