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Experimental study of the compatibility between Schistosoma haematobium and two species of Bulinus in Cameroon

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TLDR
The results suggested that B. truncatus might be potentially more implicated than B. globosus to the extension of the urinary bilharziasis in Cameroon.
Abstract
Pour estimer les risques de l'extension de la bilharziose urinaire au Cameroun, une etude de la compatibilite a confronte Schistosoma haematobium de trois localites relativement eloignees (Mourtourvva, Gounougou et Kekem) a 4 populations de Bulinus truncatus (Gounougou, Ngaoundere, Bertoua et Kekem) et 4 populations de B. globosus (Mourtourwa, Ouroudoukoudje, Bafia et Yaounde). Les descendants directs de mollusques sauvages ont ete exposes aux miracidiums liberes par des oeufs de S. haematobium des urines filtrees de bilharziens. Entre le 25 e et le 60e jour post-infestation, le nombre de mollusques survivants, celui des emetteurs de cercaires et la duree de la periode prepatente ont ete releves. Les differentes populations de B. truncatus ont ete sensibles a toutes les souches du parasite testees alors que seulement 2 des 4 populations de B. globosus ont ete sensibles a S. haematobium de Mourtourwa. Un taux de susceptibilite significativement plus eleve et une periode prepatente significativement plus courte ont ete trouves chez B. truncatus. prepdiente signi La compatibilite des couples homopatriques, meilleure que celle de couples allopatriques, a ete egalement caracterisee par un taux de susceptibilite plus eleve et une duree de la periode prepatente plus courte. B. truncatus jouerait un role potentiellement plus important que B. globosus dans l'extension de la bilharziose urinaire au Cameroun.

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