title: Enterocolitis in cattle associated with Yersinia pseudotuberculosis infection.
abstract: A syndrome in cattle of diarrhoea and death associated with enteric Yersinia pseudotuberculosis infection is described. Outbreaks occurred during winter and early spring in adult cattle grazing pastures waterlogged by recent flooding or persistent heavy rain. Antibiotic therapy was effective early in the course of the syndrome. At necropsy there was severe acute enterocolitis, and bacteria consistent with Y. pseudotuberculosis were observed in the lesions. This organism could usually be isolated from the intestines of affected animals but was recovered less often from other organs. Representative isolates were identified as Y. pseudotuberculosis serotype III. The association of this syndrome with waterlogged pastures and low temperatures suggests that these conditions favour transmission of Y. pseudotuberculosis infection in cattle. The role of Y. pseudotuberculosis as primary pathogen requires confirmation.
authors.affiliation: New South Wales Department of Agriculture, Wollongbar.
authors.forename: R B
authors.initials: RB
authors.lastname: Callinan
authors.forename: R W
authors.initials: RW
authors.lastname: Cook
authors.forename: J G
authors.initials: JG
authors.lastname: Boulton
authors.forename: G C
authors.initials: GC
authors.lastname: Fraser
authors.forename: D B
authors.initials: DB
authors.lastname: Unger
mesh_terms: D000018:Abomasum / Q000382:microbiology; D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology* / Q000382:microbiology / Q000473:pathology; D004760:Enterocolitis / Q000453:epidemiology / Q000382:microbiology / Q000473:pathology / Q000662:veterinary*; D005243:Feces; D005260:Female; D007422:Intestines / Q000382:microbiology; D015009:Yersinia Infections / Q000662:veterinary*; D015011:Yersinia pseudotuberculosis / Q000302:isolation & purification; D015012:Yersinia pseudotuberculosis Infections / Q000453:epidemiology / Q000382:microbiology / Q000473:pathology / Q000662:veterinary*