Journal
ACTA TROPICA
Volume 84, Issue 1, Pages 31-41Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0001-706X(02)00135-3
Keywords
Schistosoma mansoni; hookworm; water-contact patterns; Kato-Katz thick smears; schoolchildren; Cote d'Ivoire
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Infections with Schistosoma mansoni and hookworms are widespread in sub-Saharan Africa and the burden of disease associated with both parasites is enormous. Although there is a large overlap in their geographic distribution, little is known about the association between S. mansoni and hookworm infections and the underlying mechanisms. We explored this association among 325 schoolchildren from Cote d'lvoire, by screening multiple stool specimens over consecutive days. We found a highly significant positive association between S. mansoni and hookworm infections with an adjusted odds ratio of 2.25 (95% confidence interval: 1.31-3.85; P = 0.003). Increasing infection intensity of S. mansoni was significantly correlated with an increased likelihood of concomitant hookworm infections (chi(2) = 20.72; P < 0.001). Egg counts in stool specimens derived from a single day did not consistently reveal the positive association between the two parasites, which underlines the importance of repeated stool examinations. Several self-reported water contact patterns were significantly associated either with S. mansoni, hookworm or concomitant infections. Our findings are of considerable importance for tailoring effective health education messages that are readily adapted to the local epidemiological setting. Complemented with other control interventions, these measures might significantly reduce the burden caused by S. mansoni and hookworm infections. (C) 2002 Elsevier Science B.V. All rights reserved.
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