2009-03-07-世界卫生组织-Meningitis_Week_10,_2-8_March_2009_10页_1mb

MDSC Meningitis Weekly Bulletin Summary (Week 10, 2009)

I. Epidemiological Situation Week 10:
The total reported cases for the week (2-8 March 2009) were 4482 cases with 242 deaths, leading to a case fatality rate of 5.4%. Key findings:

• Burkina Faso reported 211 cases, with a 11.8% case fatality rate. Alert districts included Léna, Solenzo, Toma, Titao, and Ziniaré.
• Niger reported 817 cases, with a very low case fatality rate of 2.8%. Epidemic districts included Bilma, Madarounfa, and parts of Agadez, while alert districts were Gaya and Maradi.
• Nigeria reported 3351 cases, significantly contributing to the epidemic, with 39 LGAs in epidemic and 27 in alert status.

II. Synthesis of 2009 Situation (Weeks 1-10):

• Nigeria and Niger remain heavily affected.
• The epidemic expanded geographically, affecting southern Niger and northern Nigeria.
• In Nigeria, the epidemic curve slightly decreased due to underreporting stemming from civil unrest.
• Cumulative attack rates were high in various districts, with NmA being the predominant pathogen in epidemic areas of Nigeria and Niger, while Spn dominated during the previous years in Burkina Faso.

III. Pathogen Identification:

• PCR, LATEX, and Culture methods were used for identification.
• Nigeria and Niger showed significant cases of NmA; Burkina Faso reported a focus on Spn.

IV. Epidemiological Trends:

• Trends from 2008 and 2009 were compared, showing significant case numbers in countries like Burkina Faso, Nigeria, and Niger.

Note: This summary is based on the provided text and conveys the key epidemiological information without alterations or assumptions.