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Risk Index of Sleeping Sickness Transmission: Simplification of the Calculation
Published online by Cambridge University Press: 19 September 2011
Abstract
To simplify and improve the effectiveness of human trypanosomosis control efforts as well as reduce their cost, it is desirable to identify high-risk sites for transmission of trypanosomes by tsetse flies to humans. The authors propose a simplification of the risk index previously developed by Laveissière et al. (1994). The simplified index has been developed in Côte d'Ivoire and validated in Cameroon. Unlike the old index which required determination of the flies' daily survival rate, the calculation of this new index requires only the knowledge of the proportions of teneral flies and of flies that have fed on human blood, from the population caught in the various biotopes.
Résumé
Simplifier la lutte contre les vecteurs de maladie du sommeil, augmenter son efficacité, réduire les coûts, exigent de connaître les sites à haut risque de transmission du trypanosome par la glossine à l'homme. Les auteurs proposent une simplification de l'indice de risque (Laveissière et al., 1994) mis au point en Côte d'Ivoire et validé au Cameroun. Le calcul de ce nouvel indice exige seulement de connaître la proportion de glossines ténérales et celle d'individus gorgés de sang humain dans les échantillons capturés au niveau des différents biotopes.
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