(2)改变不良食鱼习惯,是预防的关键。 (3)加强粪管,防水污染。
Treatment and Prevention
Praziquantel is the choice. For adults and children older than 4 years---
Light infection: 1 dose, 25mg/kg 3 times/day 1 days.
2.特点 1)成虫寄生于肝胆管内.
2)终末宿主:人 保虫宿主:猫 犬 3)中间宿主:Ⅰ纹沼螺、赤豆螺、长角涵螺
Ⅱ淡水鱼虾 4)生食半生食含有囊蚴的鱼、虾而感染。
三、致病
虫体致胆管壁炎症反应,管壁纤维组 织增生而致胆管狭窄阻塞
胆管炎、胆囊炎、黄疸、 胆结石、肝硬化,可能致肝癌。
Cross-section of Clonorchis sinensis adults in a bile duct. Thee is marked fibrosis of the bile duct which is characteristic of chronic clonorchiasis. H and E.
Life cycle
infection of humans occur by ingestion of undercooked, salted, pickled, or smoked freshwater fish.
metacercariae excyst in duodenum and ascend biliary tract.
maturation takes about 1 month. Adults can survive 20 - 25 years.
carnivorous animals can serve as reservoir hosts.