Abstract
Human schistosomiasis is one of the most important neglected tropical diseases. Ongoing  control  measures  have  markedly  decreased  the  incidence  of  the  disease. This study determined  the
prevalence of Schistosoma hematobium and S. mansoni infection among school children and adults and  the snail  intermediate  hosts in  Aswan  Governorate.
A  cross-sectional  study  was  carried  out  in  four  villages,  El-Molcata,  Karor,  El-Mocla  and  Elkhatara.  Parasitological examination of 1200 inhabitants’ stool and urine samples was  examined 
using  direct stained smear and  Kato-Katz  concentration methods  as well as  urine sedimentation
technique. Snail vectors were collected from different water streams, identified, and examined 
for  schistosomes  infective  stages  by  shedding  and  crushing  methods.  Statistical  analysis  was 
conducted using SPSS, version 25.
The  results  showed that  S. hematobium  was 4.7% and  S. mansoni  was 1.25% among  school 
children  and adults ,  with risk  factors;   gender  and  exposure  to  canal water. Also,  the  freshwater  snails
were  Bulinus truncatus, Biomphalaria alexandrina,  Valvata  nilotica,  Physa acuta, &  Lymnaea 
truncatula.  B. truncatus  was  widely  distributed  but  did not show cercariae shedding. 
Keywords: Egypt, Aswan Governorate, Schistosoma mansoni, S. hematobium, Snails.