Document Detail

Effect of a large dam on malaria risk: the Koka reservoir in Ethiopia.
MedLine Citation:
PMID:  17697093     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To determine whether the Koka water reservoir in the Rift Valley of Ethiopia contributes to the malaria burden in its vicinity. METHODS: Frequency of malaria diagnosis in fever clinics was correlated with distance of residence from the margin of the Koka reservoir. Annual as well as seasonal malaria case rates were determined in cohorts residing < 3, 3-6 and 6-9 km from the reservoir. Plasmodium falciparum risk was compared with that of Plasmodium vivax. A multiple variable regression model was used to explore associations between malaria case rates and proximity to the reservoir, controlling for other suspected influences on malaria transmission. RESULTS: Malaria case rates among people living within 3 km of the reservoir are about 1.5 times as great as for those living between 3 and 6 km from the reservoir and 2.3 times as great for those living 6-9 km from the reservoir. Proximity to the reservoir is associated with greater malaria case rates in periods of more intense transmission. Plasmodium falciparum is most prevalent in communities located close to the reservoir and P. vivax in more distant villages. The presence of the reservoir, coupled with inter-annual climatic variations, explains more than half of the region's variability in malaria case rates. CONCLUSION: Large water impoundments are likely to exacerbate malaria transmission in malaria-endemic parts of sub-Saharan Africa.
Jonathan Lautze; Matthew McCartney; Paul Kirshen; Dereje Olana; Gayathree Jayasinghe; Andrew Spielman
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Tropical medicine & international health : TM & IH     Volume:  12     ISSN:  1360-2276     ISO Abbreviation:  Trop. Med. Int. Health     Publication Date:  2007 Aug 
Date Detail:
Created Date:  2007-08-16     Completed Date:  2007-10-23     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9610576     Medline TA:  Trop Med Int Health     Country:  England    
Other Details:
Languages:  eng     Pagination:  982-9     Citation Subset:  IM    
Department of Civil and Environmental Engineering, Tufts University, Medford, Massachusetts, USA.
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MeSH Terms
Ethiopia / epidemiology
Health Surveys
Malaria, Falciparum / epidemiology,  transmission*
Malaria, Vivax / epidemiology,  transmission*
Risk Factors
Rural Health
Water Supply*

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