Department of Parasitology and Tropical Medicine, and Institute of Health Sciences, Gyeongsang National University College of Medicine, Jinju 52727, Korea.
Korean J Parasitol. 2022 Apr;60(2):79-96. doi: 10.3347/kjp.2022.60.2.79. Epub 2022 Apr 20.
The infection nature of Clonorchis sinensis metacercariae (CsMc) in freshwater fish hosts is closely related to the transmission of human clonorchiasis. This article reviewed the infection characteristics of CsMc in freshwater fish in the Republic of Korea (Korea). The status of CsMc infection was examined in a total of 17,792 cyprinid fish of 49 species in 9 water systems, which included Hantan-/Imjin-gang, Han-gang, Geum-gang, Mangyeong-gang, Yeongsan-gang, Tamjin-gang, Seomjin-gang, Nakdong-gang, and streams in the east coastal areas from 2010 to 2020. The infection status of CsMc was examined according to cyprinid fish species and water systems, after which analyzed by endemicity and susceptibility index. The high endemicity was shown in the cyprinid fish from 3 regions (6.1%) in the upper reaches of Nakdong-gang, such as Banbyeon-cheon (stream), Yongjeon-cheon, and Wi-cheon. The moderate levels were observed in fishes from 8 regions (16.3%), and low endemicity was shown in fishes from 20 regions (40.8%). No CsMc were detected in fish from 18 regions (36.7%). The susceptibility of CsMc in index fish, Puntungia herzi, was found to be a reliable index without examination of other fish species. CsMc infection rates were closely related to subfamily groups in the cyprinid fish hosts in a highly endemic area. In Korea, a total of 58 fish species in 10 families has been listed as the second intermediate hosts for C. sinensis. This review provides several novel features of CsMc infection and clarifies the species of second intermediate freshwater fish host in Korea.
华支睾吸虫囊蚴(CsMc)在淡水鱼类宿主中的感染特性与人类华支睾吸虫病的传播密切相关。本文综述了韩国(朝鲜)淡水鱼类中华支睾吸虫囊蚴的感染特征。在 2010 年至 2020 年期间,共检查了来自 9 个水系的 49 种 17792 尾鲤鱼科鱼类,包括汉滩江/临津江、汉江、锦江、望洋江、延山江、蟾津江、泗川江、洛东江和东海岸溪流,以检测 CsMc 的感染状况。根据鲤鱼科鱼类和水系检查 CsMc 的感染情况,然后通过流行率和易感性指数进行分析。在洛东江上游的 3 个地区(6.1%)的鲤鱼科鱼类中显示出高度流行率,如板边川(溪流)、龙渊川和维川。在 8 个地区(16.3%)观察到中度流行率,在 20 个地区(40.8%)观察到低度流行率。在 18 个地区(36.7%)未检测到 CsMc。在指示鱼类 Punntungia herzi 中,CsMc 的易感性指数被发现是一种无需检查其他鱼类的可靠指标。CsMc 的感染率与高度流行地区鲤鱼科鱼类宿主的亚科群体密切相关。在韩国,共有 10 科 58 种鱼类被列为华支睾吸虫的第二中间宿主。本综述提供了 CsMc 感染的几个新特征,并阐明了韩国第二中间淡水鱼类宿主的种类。