2010-06-05-世界卫生组织-Meningitis_Week_22,_31_May_-_6_June_2010_10页_732kb

Meningitis Weekly Bulletin Summary

Inter Country Support Team - West Africa - Regional Office for Africa

Weekly Epidemiological Situation (Week 22, 31 May - 6 June 2010):

• District-Level Data: Agadez district in Niger reported 23 cases with 4 deaths (17.4% lethality).
• Meningitis Alert/Thresholds: Countries with previous epidemics are urged to evaluate the epidemic response and replenish vaccine/drug stocks.
• Dominant Pathogens: Neisseria meningitidis W135 emerged in Niger, while Streptococcus pneumoniae was prevalent in several countries with available lab results.

Synthesis for 2010 (Weeks 1-22):

• Cumulative Data: Nigeria and Chad reported high cases (4,591 and 2,919 respectively). Nigeria had the lowest lethality (6.9%), while Niger had the highest (8.3%).
• Lethality: Niger recorded the highest lethality rate (8.3%), while Burkina Faso had the lowest (14.0%).

Laboratory Pathogen Identification (Weeks 1-22, 2010):

• Dominant Bacteria: Neisseria meningitidis W135 and Streptococcus pneumoniae were the most prevalent. Burkina Faso reported the highest number of cases.
• Detection Methods: Primarily identified via PCR, latex agglutination, and culture.

Comments:

• Week 22: Niger's Agadez district remains in alert. Recommendations encourage updating epidemiological and laboratory data for the 2010 epidemic season.
• End of Epidemic Season: Countries are encouraged to update epidemiological and laboratory data to finalize analysis of the 2010 epidemic.

Graphical Representations:

• Not included due to lack of Markdown formatting per query request.
• Maps show district attack rates, cumulative attack rates, and a comparison of week-by-week data across countries from 2009 to 2010.

Summary:

• High case volumes reported across multiple countries, with varying lethality rates.
• Dominance of Neisseria meningitidis W135 and Streptococcus pneumoniae confirmed via lab testing.
• Public health recommendations focus on data updates and vaccine/drug stock replenishment ahead of potential future epidemics.