Nakamura Satoshi
Graduate School of Nursing and Faculty of Nursing, Hiroshima Bunka Gakuen University.
Nihon Eiseigaku Zasshi. 2017;72(2):101-105. doi: 10.1265/jjh.72.101.
Opisthorchiasis is the commonest liver disease caused by Opisthorchis viverrini in Thailand, Lao People's Democratic Republic (PDR) and Cambodia, which will be a major cause of future human cholangiocarcinoma in these regions. In this short review, we describe the epidemic aspects of this parasite infection and the outline of results of our recent surveys of the fluke in humans and its intermediate hosts in Vientiane Capital, where information on the opisthorchiasis epidemic is insufficient. We examined the stool from a total of 296 persons living in the Phailom village (population, 1545, 1999) from 2011 to 2012. As a result, the intestinal parasitism rate was very high from 54 to 59%. Among intestinal infections, O. viverrini infection was observed at highest rates from 51 to 53%. On the other hand, the rate of infection by nematodes was very low. We also conducted intermediate-host investigations in the river and damp areas at 3 villages in the Vientiane capital and 2 villages in Vientiane Province in 2012. As shown by these results, no Opisthorchis species was detected in 147 samples of the host genus Bythinia. However, metacercariae were detected in 3 samples of Cyclocheilichthys sp. and in a Hampala sp. in 303 cyprinid fishes collected from the Haikham village area of Vientiane Capital.
后睾吸虫病是泰国、老挝人民民主共和国和柬埔寨由猫后睾吸虫引起的最常见的肝脏疾病，将成为这些地区未来人类胆管癌的主要病因。在这篇简短的综述中，我们描述了这种寄生虫感染的流行情况，以及我们最近在万象市对人体中的吸虫及其中间宿主进行调查的结果概述，该地区关于后睾吸虫病流行的信息不足。我们在2011年至2012年期间检查了总共296名居住在法隆村（1999年人口为1545人）的人的粪便。结果，肠道寄生虫感染率非常高，为54%至59%。在肠道感染中，猫后睾吸虫感染率最高，为51%至53%。另一方面，线虫感染率非常低。我们还于2012年在万象市的3个村庄和万象省的2个村庄的河流和潮湿地区进行了中间宿主调查。结果显示，在147份豆螺属宿主样本中未检测到任何后睾吸虫物种。然而，在从万象市海坎村地区采集的303条鲤科鱼类中的3份圆唇鱼样本和3份半线脂鲤样本中检测到了囊蚴。
