2012-01-14-世界卫生组织-Meningitis_Week_02,_9_-_15_January_2012_7页_621kb

报告摘要

Total Cases: 172 cases reported across several countries (Benin, Burkina Faso, Cote d'Ivoire, Ghana, Mali, Togo, Chad).
Total Deaths: 20 deaths recorded.
Overall Mortality Rate: 11.6%.
Alert & Epidemic Thresholds:
- Burkina Faso: Karangasso Vigue district exceeded the alert threshold (attack rate of 5.3/100,000). One case of NmA was identified.
- Chad: Goundi and Bedjondo districts reported attack rates (5.9/100,000 and 8.4/100,000) indicating alerts.
Laboratory Results: Detected pathogens primarily included Nm (Neisseria meningitidis), with specific types like NmA (in Burkina Faso), W135 (in Benin, Cameroon not excluded due to no reporting), Hib/S. Pneumoniae (in Ghana), and W135 (in Chad). In-situ data indicates variability in lab capacity and testing (not all districts tested to threshold levels).
Comments: Ongoing investigation for germ identification. Standardized contact tracing protocols followed.

Total Cases YTD: ~300 cases.
Total Deaths YTD: 31 deaths.
Overall YTD Mortality Rate: ~10.3%.
Alert & Epidemic Thresholds YTD: Three districts showed rates in epidemic phase (e.g., Chad had near-threshold 8.9%).
Comments: Encouragement to maintain/enhance surveillance during the pre-epidemic period and timely data sharing.

Primary Pathogens Detected: Nm (usually positive samples correlated with clinical cases, standard lab limits vary).
Specific Strains: W135 (Benin mostly, Chad also detected), NmA (Burkina Faso, Mali, Chad), Hib/S. Pneumoniae (Ghana).
Comments: Consistent with epidemiological findings.

Inter-country Support Team - West Africa Regional Office
Contact Details: Provided email addresses (toureb@bf.afro.who.int, djingareym@bf.afro.who.int, linganic@bf.afro.who.int) and phone/fax.