REpidemiology of Time: Review

escribe the pattern of schistosomiasis infection in Egypt. Schistosomiasis haematobium was highly prevalent (60%) both in the Nile Delta and Nile Valley South of Cairo in districts of perennial irri-Cairo. The building of the Aswan High Dam-which was completed in 1967 – did not cause any confirmed the change in the pattern of schistosomiasis transmission in the Delta. There was an over-all reduction in S. mansoni prevalence while Schistosoma haematobium had continued to disappear. Giza, Fayoum, Menya and Assiut. All schistosomiasis control projects implemented in Egypt from in the whole country only 29 villages had prevalence>3 % and none had more than 10%