中华支睾吸虫 Clonorchis sinensis，简称华支睾吸虫，又名肝吸虫。成虫寄生于肝胆管，引起华支睾吸虫病（clonorchiasis)，即肝吸虫病。人感染本虫多是生吃或半生吃鱼肉所致。在我国，除了青海、宁夏、新疆、内蒙古和西藏等省区外，已有24个省、市和自治区有本病流行。
一、形态
1. 成虫 睾丸分枝状，前后排列。
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肝吸虫成虫 |
成虫病理切片 |
Clonorchis sinensis.
Whole mount showing various internal structures. Note that the two testes at the posterior end are dendritic. The caeca are unbranched. ×5. Enlarged by 5.4.
Clonorchis sinensis.
The uterus seen in polarized light. The eggs show birefringences while the background remains dark. ×5.Enlarged by 5.4
Testes of Clonorchis sinensis are deeply branched or fimbriated and lie in a tandem. The unbranched caeca can be seen on the sides. ×100. Enlarged by 5.4.
2. 虫卵 最小的蠕虫卵，瓜子形，内含毛蚴。
Clonorchis sinensis eggs in faeces.
The eggs have a distinct operculum and contain a miracidium. ×100. Interference contrast. Enlarged by 5.4
Clonorchis sinensis eggs in faeces at a higher magnification (×400). The operculum. miracidium and the posterior knob can be seen. Interference contrast. Enlarged by5.4
二、生活史
1. 人因食入含囊蚴的鱼肉而感染
2. 成虫寄生于人或动物的胆管内
