2008-02-02-世界卫生组织-Meningitis_Week_5,_28_January_2008_to_3_February_2008_9页_562kb

I. Weekly Epidemiological Situation (Week 5, 28 January - 3 February 2008)

This section reports on the epidemiological data for week 5. Total cases across the week were 402, with 48 deaths, resulting in a case fatality rate of 11.9%. Notable findings include:

• Burkina Faso had 1 district in alert and 2 districts in epidemic status.
• Côte d'Ivoire had 1 district in alert, and Nigeria had 1 district in alert.
• DRC had 2 districts in alert.
• High case fatality rates were observed in specific countries, with Benin at 7.1% and Nigeria at 32.1%.
• Pathogen identification via PCR, LATEX, or culture showed NmA primarily in epidemic districts.

II. Summary of Epidemiological Situation (Weeks 1-5, 2008)

This section synthesizes data for weeks 1-5, with a total of 1790 cases and 243 deaths, giving an overall case fatality rate of 13.6%. Burkina Faso reported the highest proportion of cases (58%), with multiple epidemic and alert districts. Countries like Côte d'Ivoire and Ghana started reporting in later weeks (e.g., week 3).

III. Pathogen Identification

Data from PCR, LATEX, or culture identified pathogens across the reporting weeks. NmA was predominantly found in epidemic districts, while Streptococcus pneumoniae was prevalent in non-epidemic areas. Overall, the pathogens highlighted potential drivers of outbreak dynamics.

IV. Data Representation

Graphical representations include maps showing cumulative attack rates by district and trends comparing 2007 and 2008 for specific countries (e.g., Central Africa, Côte d'Ivoire, Nigeria, Ghana). These figures illustrate weekly case patterns and comparative trends, providing visual insights into epidemiological changes over time.