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have recorded it from wolves in Alberta, and Sweatman4 found 36 of 58 wolves from Ontario infected. Riley5 has shown that 50%S of the wolves harbour E. granulosus in cer- tain parts of Minnesota. During the course of this study a coyote (Canis latrans), shot near Anahim Lake, B.C., was found positive for E. 423 424 MILLER: HYDATID INFECTION granulosus and as this was the only coyote ex- amined, it is possible that the infection is not uncommon in this host in some areas. Sweatman4 reports E. granulosus from one coyote and one fisher (Martes pennanti) from Ontario. A single Arctic fox (Alopex lagopus) examined at Fort Smith, N.W.T., during this survey was negative
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M J MILLER (1953) studied this question.
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