2013-05-11-世界卫生组织-Meningitis_weekly_bulletin_6_-_12_May_2013_12页_1mb

报告摘要

Meningitis Weekly Bulletin Summary

Week 19, 2013

Inter-country Support Team - West Africa

Date: 06-12 May 2013

I. Epidemiological Situation of Week 19

Total Cases: 154 suspected meningitis cases reported.
Total Deaths: 12 deaths recorded.
Case Fatality Rate (CFR): 7.8%.
Alert/Epidemic Districts: No alert or epidemic districts reported among countries for which data were available.
Completeness: Data reporting completeness (%) for the week: 39.9%.

Table 1: Epidemiological Overview by Country (Week 19)

Country	Cases	Deaths	CFR (%)	Alert District	Epidemic District	Completeness (%)
Benin	11	0	0.0	0	0	100.0
Burkina Faso	55	8	14.5	0	0	100.0
Cameroon	6	0	0.0	0	0	76.2
Guinea	9	1	11.1	0	0	100.0
... (n/a)	...	...	...	...	...	...
Sudan	27	0	0.0	0	0	5.2
Total	154	12	7.8	0	0	39.9

Key Notes: Epidemiological situation remained calm during week 19; no active alert or epidemic districts were reported.

Commentary: No alert or epidemic district in the countries that reported data. Attack Rate (AR) data for this week not provided here.

II. Synthesis of Epidemiological Situation (Weeks 01-19)

Cumulative Cases (Total, partially/fully vaccinated countries excluded below): 9,152 suspected cases reported.
Cumulative Deaths: 852 deaths recorded.
Overall CFR: Approximately 9.3% (852/9,152).
District-Level Status: No districts reported under alert or epidemic status during the reporting period.

Table 2: Summary of Epidemiological Situation by Country (Weeks 01-19)

Country	Cases (01-19)	Deaths (01-19)	CFR (%) (Total)	Weeks Notified (%)	Completeness In Weeks (%)
Benin	402	41	~10.2	3	100.0
Burkina Faso	1,923	231	~12.0	3	100.0
Cameroon	391	27	~6.9	2	98.9
...	...	...	...	...	...
Chad	225	35	~15.6	1	92.0
Total	9,152	852	~9.3	16	61.0

Lab Notes: The most common pathogen identified (by PCR, LATEX, CULTURE) is Streptococcus pneumoniae (278 cases), followed by W135 (170 cases).

III. Laboratory Data by Country

Total CSF Samples (Notification Weeks 01-19): 1,979 samples collected, representing 21.6% of all suspect cases notified (9,152).
Leading Pathogens: Streptococcus pneumoniae (Spn, n=278) and W135 (n=170).

Table 3: Pathogens Identified in Lab Samples (Weeks 01-19)

Country	NmA	NmB	NmC	NmX	NmY	Nm W135	S.Pneum	Hib
Burkina Faso	884	0	524	0	0	14	0	139
...	...	...	...	...	...	...	...	...
Total	1,979	14	1,426	15	0	9	14	170

Comments: Spn and W135 are the most frequently identified laboratory pathogens for meningitis.

IV. Graphical Representation and Commentary

Figure 4: Comparative Weekly Evolution (2012 vs 2013)

(Hebdomadary comparison of reported cases across countries for the current week, showing trends relative to 2012 data.)

Key Commentary on Overall Trend (Weeks 01-19):

Cumulative cases: 9,152.
Cumulative deaths: 852 (9.3% fatality rate).
Vaccination status: Some nations (specifically Meningitis Belt countries) utilized MenAfriVac partially (P) or fully (T), with varying completeness and effectiveness.

Countries listed include: Benin, Burkina Faso, Cameroon, Central African Republic, Côte d'Ivoire, Ghana, Guinea, Gambia, Mali, Mauritania, Niger, Nigeria, Republic of the Congo, Senegal, South Sudan, Sudan, Chad, Togo.

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