Storandt Scott T, Kazacos Kevin R
Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, IN 47907, USA.
J Parasitol. 2012 Aug;98(4):891-3. doi: 10.1645/GE-3057.1. Epub 2012 Feb 17.
Echinococcus multilocularis was identified in a coyote in Indiana in January 1990, prompting an investigation of the distribution and prevalence of the parasite in wild canids in Indiana and surrounding states. In 1990-1991, the parasite was found throughout northern and central Indiana, in northwestern Ohio, and in east-central Illinois. In 1993-1994, 162 wild canids (97 red foxes, 54 coyotes, 11 gray foxes) were collected from Michigan, and an additional 75 (55 red foxes, 7 coyotes, 13 gray foxes) from Ohio, and examined for this parasite. Of these, 15 wild canids (6.3%) were found to be infected with E. multilocularis , including 4 of 97 (4.1%) red foxes from Michigan and 9 of 55 (16.4%) red foxes and 2 of 7 (28.6%) coyotes from Ohio. In Michigan, all infected animals were from the central and southwestern parts of the state. No infected animals were found in northern Michigan, including the Upper Peninsula. In Ohio, infected animals were limited to the northwestern and west-central portions of the state. These findings constitute new state and distribution records for E. multilocularis in the midwestern United States and indicate that the parasite continues to spread eastward and into Michigan from the south.
1990年1月，在印第安纳州的一只郊狼体内发现了多房棘球绦虫，这促使人们对该寄生虫在印第安纳州及周边各州野生犬科动物中的分布和流行情况展开调查。1990年至1991年期间，在印第安纳州北部和中部、俄亥俄州西北部以及伊利诺伊州中东部均发现了这种寄生虫。1993年至1994年，从密歇根州收集了162只野生犬科动物（97只赤狐、54只郊狼、11只灰狐），并从俄亥俄州另外收集了75只（55只赤狐、7只郊狼、13只灰狐），对这些动物进行了该寄生虫的检测。其中，15只野生犬科动物（6.3%）被发现感染了多房棘球绦虫，包括密歇根州97只赤狐中的4只（4.1%）、俄亥俄州55只赤狐中的9只（16.4%）以及7只郊狼中的2只（28.6%）。在密歇根州，所有感染动物均来自该州中部和西南部。在密歇根州北部，包括上半岛地区，未发现感染动物。在俄亥俄州，感染动物仅限于该州西北部和中西部地区。这些发现构成了美国中西部地区多房棘球绦虫新的州分布记录，并表明该寄生虫继续从南部向东扩散并进入密歇根州。
