2011-06-18-世界卫生组织-Meningitis_Week_24,_13_-_19_June_2011_10页_454kb

Meningitis Weekly Bulletin Summary

Epidemiological Situation (Week 24, June 13-19, 2011)

• Overall, the situation remained calm with only sporadic cases reported across most countries.
• Burkina Faso experienced a dramatic decrease in suspected cases since vaccination with MenAfriVac in 2010.
• Case fatality rates varied by country, averaging 11.2% for the week.
• No districts were under epidemic alert, and no unusual trends reported. Countries are urged to prepare for the next epidemic season.

2011 Summary (Weeks 1-24)

• Cumulative cases: 19,093 with 1,686 deaths (case fatality rate of 8.8%).
• Burkina Faso had a significant reduction in cases due to vaccination.
• Predominant pathogens identified: Streptococcus pneumoniae and Neisseria meningitidis serogroup W135.
• Most countries maintained surveillance completeness above 90%.

Key Comments

• Sporadic cases continued with no large-scale outbreaks.
• Preparation for the upcoming epidemic season is emphasized, incorporating past vaccination efforts to strengthen surveillance systems.