Journal of Community Medicine and Primary Health Care

Log in or Register to get access to full text downloads.

Remember me or Register

Diagnostic performance of screening methods for urinary schistosomiasis in a school-based control programme, in Ibadan, Nigeria

AA Fatiregun, KO Osungbade, EA Olumide


Background: Indirect diagnostic methods in urinary schistosomiasis are widely used for screening high-risk populations in endemic areas. Their diagnostic performances, however, vary. The objective of this study was to assess their usefulness in the context of a school-based control programme technique (unqualified haematuria, terminal haematuria and dysuria), visual examination of urine and chemical reagent technique were each compared with microscopic examination of urine for schistosome ova.
Results: Chemical reagent strip technique was the most sensitive of all indirect methods assessed with sensitivity of 68.3%, followed by unqualified haematuria (41.7%), terminal haematuria (38.2%), dysuria (25.0%) and visual urine examination (16.7%). In terms of specificity, terminal haematuria and visual examination were the most specific with values of 96.1 and 96.0% respectively.
Conclusion: The validity of screening methods agreed with previous observations. Their use, however, depends on the endemicity of schistosomiasis in a given area. There is therefore a need to evaluate screening methods on a sample of the target population before being used to estimate prevalence of disease.

Keywords: urinary schistosomiasis, diagnostic performance, screening methods

Journal of Community Medicine and Primary Health Care 2005, 17(1): 24-27
AJOL African Journals Online