relation between entamoeblasis infection and blood groups

This work included 287 persons from secondary school of nursing students and patients attending Assiut Endemic Diseases Hospital. Stool and urine samples were examined for parasitic infection. Fifty- seven were infected with Entamoeba histolytica and 230 were free from parasites. Every one was examined for ABO blood groups. Twenty-seven cases were of blood group A, fourteen, thirteen and three were of blood groups O, B and AB, respectively. Entamoebiasis was more common among urban 28 than rural 24 and semi-urban 5. The infection rates were higher among females 37 than males 20 and among the age group 10-20 and 20-30 years