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Establishment of a European-type strain of Echinococcus multilocularis in Canadian wildlife

Published online by Cambridge University Press:  29 May 2013

K. GESY ,
J. E. HILL ,
H. SCHWANTJE ,
S. LICCIOLI  and
E. J. JENKINS
K. GESY*
Affiliation:
Department of Veterinary Microbiology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
J. E. HILL
Affiliation:
Department of Veterinary Microbiology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
H. SCHWANTJE
Affiliation:
Ministry of Forests, Lands and Natural Resource Operations, Victoria, British Columbia, Canada
S. LICCIOLI
Affiliation:
Department of Ecosystem and Public Heath, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada
E. J. JENKINS
Affiliation:
Department of Veterinary Microbiology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
*
*Corresponding author: Department of Veterinary Microbiology, University of Saskatchewan, 52 Campus Dr, Saskatoon, SK S7N 5B4, Canada. E-mail: karen.gesy@gmail.com
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Summary

In 2009, a haplotype closely related to European strains of Echinococcus multilocularis was detected in a dog from the Quesnel region of British Columbia, Canada. We now report the establishment of this same haplotype in 7 coyotes (Canis latrans) trapped within 40 km of Quesnel, BC. In addition, 3 coyotes and 1 red fox (Vulpes vulpes) harboured adult cestodes morphologically compatible with that of E. multilocularis (overall prevalence 33% in 33 carnivores). None of 156 potential intermediate hosts, including 131 representatives of two highly suitable rodent species, Peromyscus maniculatus and Microtus pennsylvanicus, trapped from a region 120–210 km south of Quesnel were infected. This report confirms the establishment and local transmission of a European-type strain of E. multilocularis (the causative agent of human alveolar hydatid disease), in wildlife in a forested region of North America where this cestode had not been previously detected, with significance for public and animal health.

Keywords

British ColumbiaCanadaalveolar hydatid diseasepublic healthtranslocationemergenceboreal forest
Type
Research Article
Information
Parasitology , Volume 140 , Issue 9 , August 2013 , pp. 1133 - 1137
Copyright
Copyright © Cambridge University Press 2013 

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