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Circulating anodic and cathodic antigen in serum and urine of mixed Schistosoma haematobium and S. mansoni infections in Office du Niger, Mali

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In Office du Niger, an area endemic for both Schistosoma haematobium and S. mansoni in Mali, circulating anodic (CAA) and cathodic (CCA) antigen detection assays were performed on pre-treatment serum and urine samples from two villages, Rigandé and Siguivoucé, and compared with egg counting methods. The highest prevalence was obtained with the urine-CCA assay which also had the highest sensitivity to S. haematobium, S. mansoni or mixed infection. A single urine-CCA assay was as sensitive as repeated egg counts (one stool + two urine examinations per individual). When the different assays were tested in parallel, several combinations including assays on serum were found to be highly sensitive. As urine sampling is widely accepted, urine assays will be used for further monitoring these villages one and two years after chemotherapy.

Keywords: Mali; Schistosoma haematobium; Schistosoma mansoni; Schistosomiasis; circulating anodic antigen; circulating cathodic antigen

Document Type: Original Article


Affiliations: 1: Institut National de Recherche en Santé Publique, Service de Parasitologie, Bamako-Coura, Mali, 2: University of Gent, Faculty of Veterinary Medicine, Department of Parasitology, Merelbeke, Belgium, 3: Institut National de Recherche en Santé Publique (INRSP), National Schistosomiasis Control Programme, Bamako, Mali, 4: Institute of Tropical Medicine, Antwerp, Belgium, 5: University of Leiden, Department of Parasitology, Leiden, The Netherlands

Publication date: July 1, 1997

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