2007-05-05-世界卫生组织-Meningitis_Week_18,_30_April_2007_to_6_May_2007_9页_499kb

MDSC Meningitis Summary - Week 18, 2007 Synthesis

Epidemiological Situation Week 18 (30 Apr - 6 May, 2007)

• Key Countries and Statistics: Burkina Faso reported 229 cases and 20 deaths (lethality 8.7%), with no epidemic districts but four districts in alert. Nigeria had 63 cases and three deaths (lethality 5.3%), surpassing epidemic threshold in one local government area (LGA) and alert threshold in another. Mali had 29 cases and two deaths (lethality 6.9%).
• Additional Notes: Total cases for the week were 329 across relevant countries, with an overall lethality rate of 7.6%. Dominant pathogens included Neisseria meningitidis group A and W135.

Synthesis of 2007 Situation (Up to Week 18)

• Cumulative Statistics: Notable cases included Burkina Faso (25,273 cases, 1,683 deaths), Nigeria (2,069 cases, 178 deaths), and a regional total of 34,133 cases with 2,647 deaths overall lethality 7.8%.
• Epidemic Alerts: Burkina Faso had 43/55 districts in epidemic status, Nigeria reported 13 LGAs in epidemic, and other countries like Togo and Chad had multiple alerts.
• Attack Rates: High rates were documented in Benin, Central Africa, Ghana, and Cote d'Ivoire.

Pathogen Identification (Data from PCR, Culture, etc.)

• Most Common Pathogens: Neisseria meningitidis A and W135 were predominant. Niger reported NmX, highlighting evolving pathogen profiles.
• Total Lab Reports: Data indicated significant NmW135 cases, with Togo contributing a substantial portion.

Graphical Representations

• Maps: Visualized cumulative attack rates and geographical distribution for the week and year.
• Trend Charts: Compared epidemiological trends between 2006 and 2007, focusing on countries like Nigeria and Ghana, showing case fluctuations.