Intestinal schistosomiasis and geohelminths of Ukara Island, North-Western Tanzania: prevalence, intensity of infection and associated risk factors among school childrenReportar como inadecuado




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Parasites and Vectors

, 7:612

First Online: 23 December 2014Received: 26 September 2014Accepted: 18 December 2014

Abstract

BackgroundSchistosoma mansoni and soil-transmitted helminths STH are among the most prevalent and highly neglected tropical diseases in Tanzania. However, little is known on the distribution of these infections in rural settings, especially in the island areas on Lake Victoria. Identifying the local risk factors of S. mansoni and soil-transmitted helminths is one step towards understanding their transmission patterns and will facilitate the design of cost-effective intervention measures. The present study was therefore conducted to determine the prevalence, intensity of infection and risk factors associated with S. mansoni and soil-transmitted helminth infections among school children in Ukara Island.

MethodsThis was a cross sectional study which enrolled 774 school children aged 4-15 years in 5 primary schools in Ukara Island, North-Western Tanzania. Single stool samples were collected, processed using the Kato Katz technique and examined for eggs of S. mansoni and geohelminths under a light microscope. A pre-tested questionnaire was used to collect socio-demographic information.

ResultsOverall, 494-773 63.91%, 95% CI; 45.19-90.36 of the study participants were infected with S. mansoni and the overall geometrical mean eggs per gram GM-epg of feaces were 323.41epg 95% CI: 281.09 – 372.11. The overall prevalence of soil-transmitted helminth STH was 6.73% n = 52-773, 95% CI = 4.39 – 10.32 with the most prevalent species being hookworms, 5.69% n = 44-773, 95% CI; 3.68 – 8.79. Location of school in the study villages P < 0.0001, parent occupation, fishing P < 0.03 and reported involvement in fishing activities P < 0.048 remained significantly associated with the prevalence and intensity of S.mansoni infection.

ConclusionSchistosoma mansoni infection is highly prevalent in the islands whereas the prevalence of soil-transmitted helminths is low. The risk of infection with S. mansoni and the intensity of infection increased along the shorelines of Lake Victoria. These findings call for the need to urgently implement integrated control interventions, starting with targeted mass drug administration.

KeywordsSchistosoma mansoni Soil-transmitted helminths Ukara Island North-Western Tanzania Electronic supplementary materialThe online version of this article doi:10.1186-s13071-014-0612-5 contains supplementary material, which is available to authorized users.

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Autor: Moshi Mugono - Evelyne Konje - Susan Kuhn - Filbert J Mpogoro - Domenica Morona - Humphrey D Mazigo

Fuente: https://link.springer.com/



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