Jenkins D J, Morris B
Australian Hydatid Control and Epidemiology Program, 12 Mildura Street, Fyshwick, Australian Capital Territory 2609.
Aust Vet J. 2003 Jan-Feb;81(1-2):81-5. doi: 10.1111/j.1751-0813.2003.tb11440.x.
To investigate the distribution of Echinococcus granulosus in wild dogs and foxes and hydatidosis in wildlife coexisting with foxes and wild dogs in and around Kosciuszko National Park.
Prospective and ad hoc surveys by necropsy of definitive and intermediate hosts.
Wild dogs and foxes were trapped at one location in the Kosciuszko National Park and at 7 locations around the periphery of the Park. Feral pigs, macropodid marsupials, wombats, and feral goats were collected at some of the same locations. The animals were humanely killed, their small intestines removed in the field, the contents collected, preserved and examined microscopically. All internal organs of intermediate hosts were examined for hydatid cysts. Unidentified lesions were examined histologically.
Echinococcus granulosus tapeworms were found in wild dogs from all locations. Prevalence ranged up to 100% with worm burdens up to 300,000 worms. Prevalence in foxes ranged up to 50% in animals recovered from 5 locations. The worm burdens were usually less than 50 E. granulosus per fox. Hydatid cysts were found in all macropodid species. Prevalence (69%) and cyst fertility (100%) were highest in swamp wallabies (Wallabia bicolour). Prevalence of cysts in feral pigs ranged up to 49%. Less than 22% of the cysts were fertile. No cysts were found in any of the wombats or feral goats.
Echinococcus granulosus occurs commonly in wildlife in and around the Kosciuszko National Park. High numbers of fertile cysts in swamp wallabies, a favoured dietary item for wild dogs in this region, suggests swamp wallabies are pivotal in maintaining transmission. Physical contact with wild dogs and foxes or accidental contact with wild canid faeces is a public health risk.
调查细粒棘球绦虫在野狗和狐狸中的分布情况,以及与狐狸和野狗共存于科西阿斯科国家公园及其周边地区野生动物中的包虫病情况。
通过对终末宿主和中间宿主进行尸检的前瞻性专项调查。
在科西阿斯科国家公园的一个地点以及公园周边的7个地点捕获野狗和狐狸。在部分相同地点收集野猪、有袋目有袋动物、袋熊和野山羊。对这些动物实施安乐死,在野外取出它们的小肠,收集内容物,保存并进行显微镜检查。检查中间宿主的所有内脏器官是否有包虫囊肿。对不明病变进行组织学检查。
在所有地点的野狗体内均发现细粒棘球绦虫。感染率高达100%,虫负荷量高达300,000条虫。从5个地点捕获的狐狸中,感染率高达50%。每只狐狸的虫负荷量通常少于50条细粒棘球绦虫。在所有有袋目物种中均发现包虫囊肿。在沼袋貂(Wallabia bicolour)中,囊肿感染率(69%)和囊肿繁殖力(100%)最高。野猪的囊肿感染率高达49%。不到22%的囊肿具有繁殖力。在任何袋熊或野山羊中均未发现囊肿。
细粒棘球绦虫在科西阿斯科国家公园及其周边地区的野生动物中普遍存在。沼袋貂是该地区野狗喜爱的食物,其体内大量有繁殖力的囊肿表明沼袋貂在维持传播方面起着关键作用。与野狗和狐狸的身体接触或意外接触野生犬科动物粪便存在公共卫生风险。