Visna-like disease in a Minnesota sheep.
Visna-like disease was diagnosed in a 4-year-old Mouflon ram from a Minnesota flock. The diagnosis was based on the unique distribution pattern of histologic lesions in the brain. Although visna is rarely diagnosed in the United States, this case illustrates that it should not be overlooked in differential diagnosis of neurologic disorders in sheep.
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D000818:Animals; D001921:Brain / Q000473:pathology; D004660:Encephalitis / Q000382:microbiology / Q000473:pathology / Q000662:veterinary*; D008297:Male; D012192:Retroviridae Infections / Q000382:microbiology / Q000473:pathology / Q000662:veterinary*; D012756:Sheep; D012757:Sheep Diseases / Q000382:microbiology* / Q000473:pathology; D014790:Visna-maedi virus