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Cholera Epidemiology in Mozambique Using National Surveillance Data

Cholera Epidemiology in Mozambique Using National Surveillance Data Background.Mozambique has experienced cholera for several decades. This study was undertaken to evaluate epidemiologic patterns to assist in guiding public health interventions.Methods.We evaluated district-level Ministry of Health data for 123 consecutive weeks starting 1 January 2009. Cholera cases reported to the national level were based on clinical suspicion rather than microbiological confirmation. Time and space analyses with mapping and spatial statistics were undertaken.Results.During 20092011, Mozambique identified 220 deaths among the 25 431 reported suspected cholera cases (case fatality ratio [CFR], 0.87). There were 108 outbreaks that occurred in 73 (50) of Mozambique's 145 districts. Five distinct spatial clusters were identified involving inland and coastal as well as rural and urban populations. Among 78 outbreaks whose duration was known, average duration was 7.2 weeks (median, 6; range, 125). During weeks 13, 46, 79, and 10 after an outbreak, CFRs were 1.6, 0.66, 0.33, and 0.25, respectively. During 2010, districts that experienced an outbreak during 2009 had a CFR of 0.2 compared with 4.3 among other districts.Discussion.Mozambique continues to experience widespread cholera outbreaks of short duration involving distinct spatial clusters. These findings will influence choice of public health strategies. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The Journal of Infectious Diseases Oxford University Press

Cholera Epidemiology in Mozambique Using National Surveillance Data

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References (22)

Publisher
Oxford University Press
Copyright
The Author 2013. Published by Oxford University Press on behalf of the Infectious Diseases Society of America. All rights reserved. For Permissions, please e-mail: [email protected].
Subject
AFRICHOL - THE CHOLERA SURVEILLANCE NETWORK IN NINE SUB-SAHARAN AFRICAN COUNTRIES
ISSN
0022-1899
eISSN
1537-6613
DOI
10.1093/infdis/jit212
pmid
24101638
Publisher site
See Article on Publisher Site

Abstract

Background.Mozambique has experienced cholera for several decades. This study was undertaken to evaluate epidemiologic patterns to assist in guiding public health interventions.Methods.We evaluated district-level Ministry of Health data for 123 consecutive weeks starting 1 January 2009. Cholera cases reported to the national level were based on clinical suspicion rather than microbiological confirmation. Time and space analyses with mapping and spatial statistics were undertaken.Results.During 20092011, Mozambique identified 220 deaths among the 25 431 reported suspected cholera cases (case fatality ratio [CFR], 0.87). There were 108 outbreaks that occurred in 73 (50) of Mozambique's 145 districts. Five distinct spatial clusters were identified involving inland and coastal as well as rural and urban populations. Among 78 outbreaks whose duration was known, average duration was 7.2 weeks (median, 6; range, 125). During weeks 13, 46, 79, and 10 after an outbreak, CFRs were 1.6, 0.66, 0.33, and 0.25, respectively. During 2010, districts that experienced an outbreak during 2009 had a CFR of 0.2 compared with 4.3 among other districts.Discussion.Mozambique continues to experience widespread cholera outbreaks of short duration involving distinct spatial clusters. These findings will influence choice of public health strategies.

Journal

The Journal of Infectious Diseases – Oxford University Press

Published: Nov 1, 2013

Keywords: Africa cholera epidemiology mapping Mozambique spatial mapping Vibrio cholerae

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