Objective To epidemiologically investigate echinococcosis in Hainan Tibetan Autonomous Prefecture of Qinghai Province. Methods Ultrasound and ELISA were used to evaluate echinococcosis in residents and schoolchildren.The feces of domesticated dogs was examined for Echinococcus antigens using ELISA and domesticated intermediate host animals were identified through an etiological investigation in five counties. Results The prevalence of echinococcosis in humans was 0.23%(36/15788),including 35 cases of cystic...