2014-11-01-世界卫生组织-Meningitis_weekly_bulletin_29_September_-_2_November_2014_12页_1mb

Meningitis Weekly Bulletin Summary

I. Epidemiological Situation (Weeks 40-44)

• Cases/Diseases: A total of 1,137 suspected meningitis cases, 105 deaths noted (CFR ≈ 9.2%)
• Countries with Cases: Benin, Burkina Faso, Cameroon, Guinea, Gambia, Mali, Niger, Nigeria, RD Congo, Senegal, South Sudan, Togo
• Alert/Epidemic Status: No active alerts or epidemic districts reported during this period
• Data Completeness: Overall data completeness rate stood at 70%

II. Synthesis (All Weeks 01-44)

• Cumulative Cases: 18,047 suspected meningitis cases reported during the 2014 epidemic season
• Overall Mortality: 1,660 deaths recorded (CFR = 9.2%)
• Vaccination Status:
  • Partially Vaccinated Countries: Benin, Burkina Faso, Cameroon, Côte d'Ivoire, Ethiopia, Ghana, Guinea, Gambia*, Mali, Mauritania, Niger, Nigeria, RD Congo, Senegal, South Sudan, Sudan, Togo (* indicates mention of MenAfriVac in data)
  • Entirely Vaccinated Countries: Burkina Faso, Gambia, Mali

III. Laboratory Data (Weeks 01-44)

• Analysis Conducted: 4,230 laboratory samples analyzed out of 18,047 suspected cases (23.3%)
• Predominant Pathogens Identified:
  • Streptococcus pneumoniae (Spn): 641 cases
  • Neisseria meningitidis W135: 283 cases
• Other Pathogens Detected: Haemophilus influenzae type B (Hib), other Neisseria species, Staphylococcus aureus, various common pathogens

IV. Overall Summary

• The epidemiological situation during the 2014 meningitis season in West African countries was relatively calm, with sporadic cases reported.
• Laboratory confirmation pointed to Streptococcus pneumoniae and Neisseria meningitidis W135 as the most common pathogens.
• The data completeness rate for the entire season was around 88.9-96.5% depending on specific metrics.
• No alerts or epidemic situations were reported during the observed period.