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Abstract Sclnstosomiasis is the second most important parasitic disease in the world after malarial11 In its all different forms, scliistosoiniasis is estimated to affect at least 200 million peoples and endangers another 600 millions m more than 7() countries over the world.’21 Hgypt has been considered to be one of the most highly endemic areas. I Nearly half of the population are infected either with S. mansoni. S. haeinatobium, or both.141 Schistosomal infestation in Hgypt is increasing due to progressive increase in the number of population, promotion olwatei resources for irrigation, introduction of water development projects and migration of infected individuals to non infected areas. |