Concurrent Infection with Attaching and Effacing Escherichia coli and Enterobacter cloacae in a Calf

Abstract

A 6-day-old calf with debility and weakness showed suppurative lesions in the cecum, liver, cerebrum and eyes at autopsy. Enterobacter cloacae antigen-positive organisms were detected in the suppurative lesions and the organism was isolated. On the other hand, immunohistochemistry revealed in lesions of catarrhal enteritis organisms attached to the epithelial cells, which were E. coli (026) antigen-positive and considered to be attaching and effacing Escherichia coli (AEEC). These findings indicated that the calf was concurrently infected with AEEC and E. cloacae.