| [epidemiological study of schistosomes in a coastal lake of recent formation]. | parasitological and malacological surveys were conducted round a fresh water lake, previously a salted lagoon, in the south of bénin and leaded to measure prevalence of schistosomiasis. 23 percent of population were found positive for schistosoma haematobium and 13.4 percent for s. mansoni. prevalences were different from locality to locality according to beach variations, but mean of parasite density was quite constant. males were significantly more infected than females and young adults were m ... | 1990 | 2126751 |