Abstract
We conducted a survey of schistosomiasis among schoolchildren in 2 villages in Southern Sudan. In Lui (West Equatoria region), prevalence of Schistosoma mansoni infection was 51.5%; no cases of S. hematobium infection were detected. In Nyal (Upper Nile region), prevalence of S. hematobium infection was 73% and S. mansoni infection, 70%.