Two bighorn sheep from Arizona (USA) were submitted for necropsy. One was a Rocky Mountain bighorn (Ovis canadensis canadensis) and the other was a desert bighorn (Ovis canadensis mexicana). Both had lesions consistent with those of hemorrhagic disease (HD). Epizootic hemorrhagic disease virus (EHDV) type-2 and bluetongue virus (BTV) type-17, respectively, were isolated from the sheep tissues. To our knowledge, HD caused by either EHDV or BTV infection has not been documented previously in Arizona bighorn sheep.

Arizona bighorn sheep, blue-tongue, desert bighorn sheep, EHD, epizootic hemorrhagic disease, orbivirus, Ovis canadensis canadensis, Ovis canadensis mexicana, Rocky Mountain bighorn sheep
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© Wildlife Disease Association 2002
2002