Underestimation of Schistosoma mansoni prevalences.
Field methods used for detecting Schistosoma mansoni infection miss a certain proportion of the infections. Prevalences of infection appear to be far under-estimated by faecal screening, with important consequences for control and research. Sake de Vlos and Bruno Gryseels investigate how the number of undetected infections can be statistically inferred from population surveys.
Centre for Decision Sciences in Tropical Disease Control (CDTDC), Department of Public Health and Social Medicine, Erasmus University Rotterdam, PO Box 1738, 3000 DR Rotterdam, The Netherlands.
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de Vlas
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Gryseels