广西横县集贸市场淡水鱼虾华支睾吸虫囊蚴感染调查

目的了解广西横县集贸市场食用淡水鱼虾华支睾吸虫囊蚴感染情况，为疾病控制部门采取预防措施提供参考资料。方法取6种常见淡水鱼鱼肉和淡水虾，采用直接压片法和人工消化法检查囊蚴，再将囊蚴感染家兔进一步确证。结果共采集标本651份，其中白鲩116条，鲫鱼82条，鲈鱼72条，蝙鱼28条，鲤鱼25条，鲢鱼13条，315只淡水虾，大多数来自本地养殖场，但也有少数淡水鱼虾从贵港、南宁等地运来。结果发现感染华支睾吸虫囊蚴的鱼21条，感染率6．25％。淡水虾未检出华支睾吸虫囊蚴。在来自贵港的1条白鲩中，共查出囊蚴1440个，阳性鱼感染度为7．1个／g，总体感染率为3．2％。结论广西横县市场食用淡水鱼受华支睾吸虫囊蚴感染，而且感染率比较高，要增强疾病控制部门的监管预防措施。

Infection Investigation of Encysted Metacercaria of Clonorchis Sinensis in Freshwater Fishes and Shrimps at County Heng Trade Market in Guangxi

Objective Provide references for CDC to take preventive measures by studying infection situation of Encysted Metacercaria of Clonorchis Sinensis in Freshwater Fishes and Shrimps at County Heng Trade Market in Guangxi.Methods Study encysted metacercaria taken from six commonly-seen Freshwater Fishes and Shrimps by way of pressed disc sampling and human digestion, then make verification by infecting rabbit with it. Results Among the 641 specimen collected, 116 are Ctenopharyngodon idellus,82 are crueian,72 are weever, 28 are carp, 13 are chub,315 are freshwater shrimps, most come from Japanese fish plant, others from Guigang and Nanjing. The result shows that 21 fishes are infected with encysted metacercaria, with a rate of 6.25%, no encysted metacercaria are found in freshwater shrimps.1440 encysted metacercaria are found in one Ctenopharyngodon idellus, with a rate of 3.2%.Conclusion Due to high infection rate of encysted metacerearia in freshwater fishes at County Heng Trade Market in Guangxi, supervision and preventive measures should be strengthened