National Institute of Veterinary Research, 86 Truong Chinh, Hanoi, Viet Nam.
Vet Parasitol. 2010 May 11;169(3-4):391-4. doi: 10.1016/j.vetpar.2010.01.010. Epub 2010 Jan 21.
Fishborne zoonotic trematodes (FZT) are widespread in Vietnam and Southeast Asia. It is now recognized that the risk of being infected from eating raw fish dishes applies not only to humans, but also to domestic animals (e.g., cats, dogs, and pigs) and fish-eating birds. The role of ducks and chicken, commonly raised on fish farms, as reservoir hosts, however, has not been adequately investigated. To study this question, chickens and ducks from integrated poultry-fish farms in Nghia Lac and Nghia Phu communes, Nam Dinh province, Vietnam were surveyed for FZT infections. A total of 50 ducks and 50 chickens from each commune were examined. Results revealed that 12% of chickens and 30% of ducks were infected with various species of trematodes, including two zoonotic species, Centrocestus formosanus and Echinostoma cinetorchis. Both occurred in chickens whereas only E. cinetorchis was found in ducks. Prevalence of these zoonotic species was 12% and 7% in ducks and chickens, respectively. Among other trematodes, Hypoderaeum conoideum, also a zoonotic fluke, was the most prevalent (20-30%). The feeding of snails and fish remains to poultry, either intentionally or by discharge of waste from the slaughter of ducks and chickens into the ponds, was identified as risk factors for trematode infection. The FZT species and low prevalence found in poultry in these communes indicate their role as reservoir hosts is minor.
鱼类源性人畜共患吸虫（FZT）在越南和东南亚广泛存在。现在人们认识到，食用生鱼片不仅会使人类感染，还会使家畜（如猫、狗和猪）和食鱼鸟类感染。然而，关于鸭和鸡（通常在鱼养殖场饲养）作为储存宿主的作用，尚未进行充分研究。为了研究这个问题，对越南南定省 Nghia Lac 和 Nghia Phu 公社的综合禽鱼养殖场的鸭和鸡进行了 FZT 感染调查。每个公社共检查了 50 只鸭和 50 只鸡。结果显示，12%的鸡和 30%的鸭感染了各种吸虫，包括两种人畜共患吸虫，即中华双腔吸虫和蜷尾棘口吸虫。这两种吸虫都存在于鸡中，而仅在鸭中发现了蜷尾棘口吸虫。这些人畜共患吸虫在鸭和鸡中的流行率分别为 12%和 7%。在其他吸虫中，中华肝吸虫（Hypoderaeum conoideum）也很常见（20-30%）。将蜗牛和鱼类残体故意或通过从鸭和鸡的屠宰废物排放到池塘中喂养家禽，被确定为吸虫感染的危险因素。这些公社中家禽中发现的 FZT 物种和低流行率表明它们作为储存宿主的作用较小。
