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E. colisepticemia in a foal

Three-days-old, male foal was presented for the autopsy. The animal died with signs of septic condition during of course of the antibiotic therapy. Autopsy revealed severe signs of septicemia with miliary necrotic nephritis, hemorrhagic focal colitis and serofibrinous peritonitis. Disseminated peritoneal, subepicardial and subendocardial hemorrhages were seen. Liver and spleen (reticular hyperplasia) were enlarged, and the lungs were congested. Microscopicali, severe bacterial, necrotic, multifocal lesions were seen in the kidneys, lungs and liver. Bacterial colonisation was found also in the brain along with mononuclear perivascular encephalitis. Bacteriological examination revealed bacteria E. coli. This case shows that some time maybe difficulties in differentation between the Actinobacillus equi septicemia and E. coli septicemia. Autopsy findings may be almost the same in both cases. but histopathological examination of the kidneys showing extraglomerular bacterial colonisation may be helpful in establishing correct diagnosis.

E. coli septicemia; foal

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