[Surveillance of echinococcosis in high risk areas of Yixing City from 2008 to 2009].

An investigation was conducted retrospectively for echinococcosis (hydatid disease) in Yixing City from 2008 to 2009, the serum or fecal samples of suspected patients during the past 5 years and host animals were assessed by ELISA. There were 2 cases reported by network and 4 confirmed patients by investigation, and among the total 6 cases, 5 cases may be infected in the locality. The positive rates were 0.