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The epidemiology of a recent focus of mixed Schistosoma haematobium and Schistosoma mansoni infections around the 'Lac de Guiers' in the Senegal river basin, Senegal

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dc.contributor.author De Clercq, D.
dc.contributor.author Vercruysse, J.
dc.contributor.author Picquet, M.
dc.contributor.author Shaw, D. J.
dc.contributor.author Diop, M.
dc.contributor.author Ly, A.
dc.contributor.author Gryseels, B.
dc.date.accessioned 2010-05-20T09:48:09Z
dc.date.available 2010-05-20T09:48:09Z
dc.date.issued 1999
dc.identifier.issn 1360-2276
dc.identifier.other ITG-DLA
dc.identifier.other DIRECT
dc.identifier.other U-SCHISTO
dc.identifier.other JIF
dc.identifier.other ABSTRACT
dc.identifier.other FTB
dc.identifier.uri http://hdl.handle.net/10390/6154
dc.description.abstract A village with mixed Schistosoma mansoni and S. haematobium infections (probably in a early endemic phase) was identified around the Lac de Guiers in the Senegal River Basin. In documenting the epidemiology of both schistosomes, we focused on prevalence and intensity of infection, transmission patterns and the impact of treatment. S. mansoni prevalences (near 100%) and egg counts (overall geometric mean eggs per gram of faeces (epg) of 589 were high in all age groups, with 35% of individuals excreting > 1000 epg, and showing a slow decline in egg output only after the age of 30 years. The overall prevalence (28%) and egg counts (2% > 50 eggs/10 ml) of S. haematobium were low, with mean counts of 6.3 eggs/10 ml. Maximal mean S. mansoni egg counts were found in 5-9 year-old boys and in 15-19 year-old girls; S. haematobium maximal counts in 1-4 year-old boys and in girls aged 5-9. Extremely high Biomphalaria pfeifferi infection ratios were recorded over the whole year. Following a single treatment, re-infection was rapid with prevalences and mean egg counts of both Schistosoma species reaching pretreatment levels within 7 months. en
dc.language English en
dc.publisher Blackwell Science
dc.subject Helminthic diseases en
dc.subject Schistosomiasis en
dc.subject Schistosoma haematobium en
dc.subject Schistosoma mansoni en
dc.subject Epidemiology en
dc.subject Senegal en
dc.subject Africa, West en
dc.title The epidemiology of a recent focus of mixed Schistosoma haematobium and Schistosoma mansoni infections around the 'Lac de Guiers' in the Senegal river basin, Senegal en
dc.type Article en
dc.citation.issue 8 en
dc.citation.jtitle Tropical Medicine and International Health en
dc.citation.volume 4 en
dc.citation.pages 544-550 en
dc.identifier.pmid http://www.ncbi.nlm.nih.gov/pubmed/10499077
dc.citation.jabbreviation Trop Med Int Health en


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