Skírnisson K, Marucci G, Pozio E
Laboratory of Parasitology, Institute for Experimental Pathology, Keldur, University of Iceland, IS-112 Reykjavik, Iceland.
J Helminthol. 2010 Jun;84(2):182-5. doi: 10.1017/S0022149X09990514. Epub 2009 Sep 7.
In most Arctic and subarctic regions, Trichinella nativa is a common zoonotic pathogen circulating among wild carnivores. The polar bear (Ursus maritimus) is one of the most important reservoirs for T. nativa in frigid zones. In Iceland, Trichinella infection has never been detected in the local wildlife, despite the presence of one of the host species, the arctic fox (Alopex lagopus). In 2008, one of two polar bears that had swum to Iceland's coast was found to have been infected with Trichinella sp. (8.5 larvae/g in the tongue, 6.8 larvae/g in the masseter and 4.4 larvae/g in the diaphragm); the larvae were identified as T. nativa. This is the second report of Trichinella infection in polar bears that reached the Icelandic coast. In the present work, we describe this case of infection and discuss the epidemiological features that have allowed T. nativa to spread in Arctic regions.
在大多数北极和亚北极地区，本地毛形线虫是一种在野生食肉动物中传播的常见人畜共患病原体。北极熊（Ursus maritimus）是寒带地区本地毛形线虫最重要的宿主之一。在冰岛，尽管存在宿主物种之一北极狐（Alopex lagopus），但当地野生动物中从未检测到旋毛虫感染。2008年，发现两只游到冰岛海岸的北极熊中有一只感染了旋毛虫属（舌部每克有8.5条幼虫，咬肌每克有6.8条幼虫，横膈膜每克有4.4条幼虫）；这些幼虫被鉴定为本地毛形线虫。这是北极熊感染旋毛虫并抵达冰岛海岸的第二份报告。在本研究中，我们描述了这例感染病例，并讨论了促使本地毛形线虫在北极地区传播的流行病学特征。
