Hydatid cyst is an important and zoonotic infection caused by cystic stage of Echinococcus granulosus. It is a major and economic problem in most areas of the world that livestock are kept such as Iran. In this study, a total of 111 buffalo,s sera from Center of Buffalo Sperm Preparation (CBSP), Orumia (West Azarbayjan province, Iran, 2003) were examined for the presence of hydatidosis by usin...