2011-03-05-世界卫生组织-Meningitis_Week_09,_28_February_-_6_March_2011_8页_699kb

Epidemiological Summary of Meningitis Bulletin Week 08, 2011

I. Weekly Epidemiological Data (February 21-27, 2011)

• Total cases reported: 538
• Total deaths: 61
• Overall lethality rate: 11.3%
• Districts exceeding alert or epidemic thresholds:
  • Burkina Faso: 2 districts reported epidemic (Pama and Karangasso-Vigue), 1 district reported alert (Lena)
  • Niger: Tillaberi district reported high alert
  • Chad: 5 districts reported epidemic (Melfi, Laokassy, Benoye, Kelo, Moundou), 2 districts reported alert (Bousso, Sarh)

II. Annual Synthesis (Weeks 1-8, 2011)

• Highest case notification from: Burkina Faso (1060 cases, 197 deaths)
• Cumulative cases: 3,812
• Cumulative deaths: 470
• Overall lethality rate: 12.3%
• Countries encouraged to update weekly data: Silent countries, including the Central African Republic

III. Pathogen Information

• Streptococcus pneumoniae (Spn) is the predominant pathogen across most countries
• Exception noted in Chad, where Non-Typable Haemophilus influenzae type B (NmA) is driving the epidemic and affecting multiple districts