2013～2018年江苏溧阳市棘球蚴病流行病学调查

Epidemiological survey on echinococcosis prevalence in Liyang City of Jiangsu Province from 2013 to 2018

目的了解江苏溧阳市棘球蚴病现状,为制订防治策略提供依据。方法对棘球蚴病网络报告病例进行流行病学调查。采用ELISA法检测重点地区居民血清抗棘球蚴抗体;采用ELISA法检测重点地区犬粪棘球绦虫抗原,对粪棘球绦虫抗原阳性犬进行导泻,查找棘球绦虫卵;采用肉眼观察或触摸法检查屠宰交易市场羊只内脏,对可疑内脏作进一步剖检。结果共调查棘球蚴病病例9例,均为疑似本地感染病例;检测重点地区居民血清1 933份,阳性率为0. 16%(3/1 933);检测重点地区犬粪1 243份,阳性率为1. 05%(13/1 243),对抗原阳性犬进行导泻检查,未发现棘球绦虫卵;检查屠宰场羊肝570只、羊肺566对,未发现棘球蚴感染情况。结论溧阳市出现棘球蚴病网络报告病例,但无直接证据表明该市存在棘球蚴病传染源,应继续加强流行病学调查研究工作。

Objective To understand the current status of echinococcosis prevalence in Liyang city for evidences to plan control strategies for this parasitic disease. Methods Epidemiological investigation was performed on echinococcosis prevalence based on case report through network. Enzyme linked immunosorbent assay( ELISA) was used to measure the serum antibody against echinococcosis in population living the interested areas. Also,ELISA was performed to detect Echinococcus faecalis antigen in dogs in the focus areas,and dogs with positive fecal Echinococcus antigen were subjected to diarrhea to find the eggs. The viscera of sheep in slaughter market were examined by visual observation or touch,and the suspected samples were further tested. Results A total of 9 cases of echinococcosis were identified as suspected local infection. The positive rate was 0. 16%( 3/1 933) in the serum samples from residents in interested areas,and 1. 05%( 13/1 243) in the dog feces,respectively. No Echinococcus eggs were observed in the canine feces in which positive antigen was detected. Inspection of 570 pieces of sheep livers and 566 pairs of sheep lungs indicated no hydatid infection. Conclusion Although echinococcosis was reported in Liyang City,yet there is no direct evidence demonstrating local source of echinococcosis infection in current stage. Nevertheless,following endemic surveillance is necessary.