Surveillance for hydatidosis in Emin, Xinjiang, 2007-2013

Objective To understand the prevalence of hydatidosis in Emin county, Xinjiang Uygur autonomous region and provide evidence for the evaluation of current control measures. Methods The analysis was conducted on the prevalence of hydatidosis in Emin from 2007 to 2013 with software SPSS 17.0. Results By the end of 2013, a total of 169 348 people had been screened, among them 779 were diagnosed with hydatidosis, including 4 patients with alveolar echinococcosis. The population prevalence of hydatidosis was estimated to be 0.45%. The serum samples of 12 510 children aged 6-12 years were detected and 339 were positive, the serum positive rate of antibody to echinococcus cyst in children declined significantly from 7.14% in 2008 to 0.40% in 2013 (trend2=200.5, P0.001). A total of 11 767 dog stool samples were detected and 216 were positive, the positive rate of coproantigen in dogs declined significantly from 4.34% in 2008 to 0.63% in 2013(trend2=68.83, P0.001). In total, 17 215 sheep were examined, and the infection rates in sheep decreased significantly from 6.56% in 2007 to 2.02% in 2013 (trend2=59.79, P0.001). Conclusion The current hydatidosis prevention and control measures can reduce the infection of echinococcus in dogs effectively, and thereby further reduce the serum positive rate of antibody to echinococcus cyst in children and the prevalence of hydatidossi in sheep.