大连地区肝吸虫感染流行病学分析

Epidemic analysis of Cionorchis sinensis infection in Dalian city

目的对大连地区复州城肝吸虫孳生地及流行病学进行分析,了解肝吸虫感染及发病状况。方法通过对大连地区复州城中间宿主淡水鱼(麦穗鱼等6种)肝吸虫感染的调查,分析其流行病学特点。结果从复州城河流水域及农家鱼塘中所捕获的淡水鱼发现,鱼鳃及肌肉组织中数量不等的囊蚴,通过人工感染接种猫后,约2个月左右时间,在其粪便中检获到虫卵,并从其肝胆管内获取成虫,经病原学鉴定为肝吸虫。结论复州城地区存在肝吸虫感染的自然疫源地,注意饮食习惯和加强卫生宣传教育是控制本病感染和传播的重要措施。

Objective To analysis breeding ground of Clonorchis sinensis and explore the epidemiology basis lead to Clonorchis sinensis. Methods Through investigating fresh-water fishes infected by liver fluke worms in Fuzhou town to Dalian area, its epidemiology was analysed. Results Metacercaria had existed in the gills and muscular tissue of the fish from the stream flow of Fuzhou town and the fishponds of farmers. After inoculation for 2 months, some eggs from cat＇s feces were found, at the same time, some adults from cat＇s hepatic ducts and bile ducts were obtained. According to identifying of etiology, these adults were confirmed to Clonorchis sinensis. Conclusion Fuzhou town existed breeding ground of Clonorchis sinensis. Improving eating habits and strengthening health propaganda were significant means of controling the infection and dissemination of clonorchiasis.