| preliminary schistosomiasis survey in the lower volta river below akosombo dam, ghana. | snail surveys were carried out in kpong lake, in southern ghana, and along the lower volta river below the lake. bulinus globosus and biomphalaria pfeifferi were abundant in the kpong lake and b. truncatus and biom . pfeifferi, especially the latter, were widespread below the lake. urine surveys among primary school children at eight localities along the lower volta showed schistosoma haematobium prevalence rates of 38.8-96.2%. at bator and mepe , where records for an earlier survey were availab ... | 1984 | 6742926 |