Dirofilariasis in Man in Canada

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  • Department of Tropical Medicine, Tulane University School of Public Health and Tropical Medicine, Department of Zoology, University of Alberta, New Orleans, Louisiana 70112, Canada

An infertile female Dirofilaria resembling Dirofilaria ursi was removed in a subcutaneous nodule from the upper arm near the axilla of a middle-aged woman from a rural community of western Canada—the fourth such case to be reported from Canada and northwestern United States.