163PREVALENCE AND INCIDENCE OF URINARY SCHISTOSOMIASIS INFECTION AMONG THE POPULATION OF ABO RUKBA VILLAGE IN WHITE NILE STATE, SUDANObjective to determine the prevalence and incidence “flow up after treatment of urinary schistosomiasis Abo Rukba village”. To deferent techniques (centrifugation and Filtration) were used to determine the prevalence and incidence of urinary schistosomiasis infection among the population, after recognition of the parasite, praziquantel treatment was apply for all infected cases. Viability test for was preformed one month after treatment. Out of 1029 urine sample examined, 594 was found positive for Schistosoma haematobium infection “57.7% overall prevalence rate”. The prevalence in male was higher than female “61.8 and 53.7% respectively”. The highest prevalence rate of infection (62.6%) was reported among the age group 11-20 years. Six months post treatment with praziquantel, overall incidence rate of 20.8% “126 Out of 606 urine samples examined”. Out of 245 eggs discharged, 60 were found viable constituting a 24.5% viability rate. The study has revealed an extensive endemicity of S. haematobium over the whole area. The exceptionally high rate of viability (24.5%) reported in the study might probably in our opinion be due to low efficiency of praziquantel or the drug was not administrated in its proper dose. Incidence rate which was reported in this study reflex the continuous existence of the parasite in the area of study.Microparasitologyabosalif@gmail.comResearch4122014Prevalence,Incidence,Viability,Post treatment,PraziquantelHusameldin A. Bakhit,Mohamed B. Saad,Asha A. Elsadig,Abdelsalam B. Satti,Khalid O. Abosalif University of Medical Sciences and Technology, Faculty of Medical Laboratory Sciences, Sudan,Department of Medical Laboratory Sciences, Omdurman Ahlia University, Sudan,Veterinary Research Administration, Soba, Sudan,Faculty of Medical Laboratory Sciences, Omdurman Islamic University, Sudan.,Faculty of Medical Laboratory Sciences, Department of Medical Parasitology, Omdurman Islamic University, Sudan