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Free Content The performance of haematuria reagent strips for the rapid mapping of urinary schistosomiasis: field experience from Southern Sudan

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Abstract:

Summary The implementation of programmes to control neglected tropical diseases (NTDs) requires up-to-date information on the prevalence and distribution of each NTD. This study evaluated the performance of reagent strip testing for haematuria to diagnose infection among school-aged children in the context of a rapid mapping survey in Southern Sudan. The reagent strips were highly sensitive (97.8%) but only moderately specific (58.8%). The proportion of false positive diagnoses was significantly higher among girls than boys, especially among girls aged 5–10 years. These findings suggest that reagent strips alone are not sufficient for rapid mapping surveys. A two-step approach is thus recommended whereby haematuria-positive urine samples are subsequently examined using urine filtration.

French
Performance des bandelettes réactives pour l’hématurie dans la cartographie rapide de la schistosomiase urinaire: expérience de terrain dans le sud du Soudan

La mise en place de programmes de lutte contre les maladies tropicales négligées (MTN), nécessite une mise à jour sur la prévalence et la distribution de chaque MTN. Cette étude a évalué la performance du test à bandelettes réactives pour l’hématurie dans le diagnostic de l’infection àSchistosoma haematobium chez les enfants d’âge scolaire dans le cadre d’une surveillance cartographique rapide dans le sud du Soudan. Les bandelettes réactives se sont avérées très sensibles (97,8%), mais seulement modérément spécifiques (58,8%). La proportion de diagnostics faux positifs était significativement plus élevée chez les filles que chez les garçons, surtout chez les filles âgées de 5 à 10 ans. Ces résultats suggèrent que les bandelettes réactives seules ne suffisent pas pour effectuer des surveillances cartographiques rapides. Une approche en deux étapes est donc recommandée par laquelle des échantillons d’urine à hématurie positive sont ensuite examinés en utilisant la filtration d’urine.

Keywords: Schistosoma haematobium; Schistosoma haematobium; diagnóstico; Southern Sudan; Sudan del sur; cartographie; diagnosis; diagnostic; enfermedades tropicales olvidadas; esquistosomiasis urinaria; maladies tropicales négligées; mapeado; mapping; neglected tropical diseases; schistosomiase urinaire; sud du Soudan; urinary schistosomiasis

Document Type: Research Article

DOI: https://doi.org/10.1111/j.1365-3156.2009.02407.x

Affiliations: 1:  Malaria Consortium – Africa Regional Office, Kampala, Uganda 2:  Malaria Consortium – Southern Sudan Office, Juba, Southern Sudan 3:  Ministry of Health, Government of Southern Sudan, Juba, Southern Sudan

Publication date: 2009-12-01

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