| [epidemiologic study of s. haematobium bilharziasis in the rice fields of yagoua (north cameroon) ii. distribution and ecology of intermediate hosts]. | while inventoring the local malacological fauna and evaluating the density of species acting as intermediate hosts of human schistosomes it has been shown that bulinus truncatus is predominant in the study area. bulinus globosus is scarcely encountered. biomphalaria pfeifferi is only found in the mayo guerleo, in irrigation canals and draining ditches. but b. globosus and b. pfeifferi have not yet invaded the recent aquatic network and are not found in the lake nor in the newly created irrigatio ... | 1982 | 7201892 |