Korea Association of Health Promotion, Seoul 07653, Republic of Korea; Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul 03080, Republic of Korea.
Korea Association of Health Promotion, Seoul 07653, Republic of Korea; Department of Parasitology, Korea University College of Medicine, Seoul 02841, Republic of Korea.
Acta Trop. 2019 Nov;199:105100. doi: 10.1016/j.actatropica.2019.105100. Epub 2019 Aug 9.
Studies on the infection status with fishborne zoonotic trematode (FZT) metacercariae were reviewed with our data, which obtained from the fish survey in 8 administrative localities, i.e., Vientiane Municipality, Luang Prabang, Xieng Khouang, Vientiane, Khammuane, Savannakhet, Saravane and Champasak Provinces of Lao PDR (Laos) in 10 times. Total 1046 freshwater fishes (69 species) were examined with the artificial digestion method from 2002 to 2011. Total 6 species of zoonotic trematode, i.e., Opisthorchis viverrini, Haplorchis taichui, Haplorchis yokogawai, Haplorchis pumilio, Centrocestus formosanus and Procerovum varium, metacercariae were detected in fishes from Laos. The metacercariae of O. viverrini were detected in 284 (37.9%) out of 749 fishes (26 spp.), and their average density was 297 per fish infected. The prevalences of 4 heterophyid species, i.e., H. taichui, H. yokogawai, H. pumilio and C. formosanus, metacercariae were 45.4% (out of 941 fishes in 46 spp. examined), 45.1% (811 fishes in 35 spp.), 8.8% (457 fishes in 11 spp.) and 18.1% (475 fishes in 13 spp.), their average densities were 291, 218, 4 and 15 per fish infected respectively. The endemicities of O. viverrini metacercariae were much higher in fishes from Savannakhet Province and Vientiane Municipality (2002). Those of H. taichui metacercariae were much higher in fishes from Khammuane and Luang Prabang (2011) Provinces. By the present study, it was confirmed that some species of FZT metacercariae are highly prevalent in fishes from Laos.
我们回顾了用从老挝 8 个行政地区（万象市、琅勃拉邦、川圹、万象、甘蒙、沙湾拿吉、沙拉湾和占巴塞省）的鱼类调查中获得的本国数据进行的鱼类后生动物（FZT）幼虫感染状况研究。2002 年至 2011 年，采用人工消化法检查了 1046 种淡水鱼类（69 种）。共在鱼类中检测到 6 种人畜共患吸虫，即华支睾吸虫、肝片形吸虫、后睾吸虫、棘口吸虫、腔阔盘吸虫和卷棘口吸虫幼虫。在老挝鱼类中检测到 0. viverrini、H. taichui、H. yokogawai、H. pumilio、C. formosanus 和 P. varium 等 6 种后生动物幼虫。在 26 种鱼类的 749 尾鱼（37.9%）中检测到 O. viverrini 幼虫，每条受感染鱼的幼虫平均密度为 297 条。4 种异形吸虫幼虫，即 H. taichui、H. yokogawai、H. pumilio 和 C. formosanus 的流行率分别为 45.4%（941 尾鱼，共 46 种）、45.1%（811 尾鱼，共 35 种）、8.8%（457 尾鱼，共 11 种）和 18.1%（475 尾鱼，共 13 种），每条受感染鱼的幼虫平均密度分别为 291、218、4 和 15 条。2002 年， Savannakhet 省和万象市鱼类中 O. viverrini 幼虫的地方性流行率较高；2011 年，Khammuane 和 Luang Prabang 省鱼类中 H. taichui 幼虫的地方性流行率较高。本研究证实，老挝鱼类后生动物幼虫的一些种属高度流行。
