title: Attaching and effacing Escherichia coli infection as a cause of diarrhea in young calves.
abstract: A form of enteric Escherichia coli infection was identified in 60 calves from 59 farming operations. The E coli responsible for these infections principally colonized the colon, inducing a distinctive lesion described as attaching and effacing. Hemorrhagic enterocolitis or blood in the feces was observed on 40% of the farms. Of affected calves, 86.6% were dairy calves (average age, 11.8 days). Forty-four calves were infected concurrently with other enteropathogens (cryptosporidia, rotavirus, coronavirus, enterotoxigenic E coli, bovine viral diarrhea virus, coccidia). Verotoxin-producing E coli was recovered from 31 calves; 8 were serotype O111:NM isolates, 3 were serotype O5:NM, and 1 was serotype O26:NM.
authors.affiliation: Animal Disease Research and Diagnostic Laboratory, South Dakota State University, Brookings 57007.
authors.forename: B H
authors.initials: BH
authors.lastname: Janke
authors.forename: D H
authors.initials: DH
authors.lastname: Francis
authors.forename: J E
authors.initials: JE
authors.lastname: Collins
authors.forename: M C
authors.initials: MC
authors.lastname: Libal
authors.forename: D H
authors.initials: DH
authors.lastname: Zeman
authors.forename: D D
authors.initials: DD
authors.lastname: Johnson
authors.forename: R D
authors.initials: RD
authors.lastname: Neiger
mesh_terms: D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000209:etiology / Q000473:pathology*; D003108:Colonic Diseases / Q000209:etiology / Q000473:pathology / Q000662:veterinary*; D003967:Diarrhea / Q000209:etiology / Q000473:pathology / Q000662:veterinary*; D004760:Enterocolitis / Q000209:etiology / Q000473:pathology / Q000662:veterinary; D004848:Epithelium / Q000382:microbiology / Q000473:pathology; D004926:Escherichia coli / Q000145:classification / Q000472:pathogenicity*; D004927:Escherichia coli Infections / Q000209:etiology / Q000473:pathology / Q000662:veterinary*; D005260:Female; D007413:Intestinal Mucosa / Q000382:microbiology / Q000473:pathology; D014774:Virulence