2023-02-25-世界卫生组织-Meningitis_Weekly_bulletin_20_to_26_February_2023_19页_1mb

Summary of Meningitis Weekly Bulletin - Week 08, 2023

Epidemiological Data for Week 08 (February 20-26, 2023)

• Total suspected meningitis cases: 215 across 14 countries reporting data.
• Cases and deaths varied by country, with Benin, Ghana, and Togo showing districts crossing the alert threshold.
• Countries with alerts: Benin (1 district), Ghana (2 districts), Togo (1 district).
• Letality rate was 1.4% (3 deaths), with high data completeness (>30%).
• Key alerts: Benin's Borgou Region district with a high attack rate.

Cumulative Data Summary for Weeks 1-8 (January-February 2023)

• Total suspected cases: 3,412 across 21 countries.
• Deaths: 185, giving a case fatality rate of 5.4%.
• Letality rates varied significantly (e.g., 3.0% in Benin, 6.8% in Republic of Congo).
• Districts in alert or epidemic: At least 29 districts affected, with Nigeria and South Sudan showing the most cases.
• Countries urged to share data, with silent countries (e.g., Ethiopia) asked to report.

Laboratory Data Summary

• Specimen collections: 1417 samples tested or processed.
• Key pathogens: Neisseria meningitidis C (50.0%), Streptococcus pneumoniae (39.1%), and others.
• PCR and culture lab results were timely for confirmation.
• Recommendations: Improve lumbar puncture practice, sample transportation, and lab supplies for better pathogen identification.

Key Recommendations and Actions from the Annual Meeting on Meningitis Surveillance and Response

• Strengthen surveillance by subdividing high-risk districts, ensuring timely data sharing.
• Fast-track lab confirmation and vaccination during outbreaks, using existing stockpiles.
• Vaccination efforts: Countries should apply for GAVI support to introduce MenAfriVac by 2023.
• Lab capacity building, including quarterly follow-up meetings and supply acquisition.
• Meningitis-specific actions include strengthening epidemic preparedness, reintegrating vaccination campaigns, and ensuring post-treatment care.

Progress on MenAfriVac Introduction in the Meningitis Belt

• Vaccine coverage: 14 countries in the African meningitis belt have introduced or plan to introduce MenAfriVac.
• Catch-up activities: Comprehensive campaigns to protect unvaccinated children aged 1-9 years.
• Notable: Guinée-Bissau will supply additional doses to Guinea to address gaps, supported by WHO, GAVI, and partners.

The bulletin emphasizes ongoing epidemiological activities, lab surveillance, and collaborative efforts to manage meningitis risks effectively.