Abstract
A three week old Holstein calf that died after a period of anorexia and diarrhea had a severe necrotizing ileitis. The lesions which were most severe above Peyer's patches contained numerous filamentous bacteria. Prominent intranuclear inclusion bodies in vascular endothelial cells in both the affected intestine and the mesenteric lymph nodes were accompanied by vasculitis and thrombosis. Adenovirus-like particles were demonstrated ultrastructurally in the inclusions.
This case demonstrates a preferential association of the intestinal necrosis with the gut associated lymphoid tissue. Also, the significance of viral infection of vascular endothelium versus intestinal epithelium in determining the type and severity of injury, is deduced from this and other previously reported cases.
Keywords: Bovine, enteritis, adenovirus
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