Journal Article


Fergus Ryan
John Egan
Seamus Power
Kevin Kenny
Don O'Grady



cattle ireland diagnostic tests false positive reactions detection brucellosis ireland yersinia enterocolitica animals

Detection of Yersinia enterocolitica serotype O:9 in the faeces of cattle with false positive reactions in serological tests for brucellosis in Ireland. (2016)

Abstract Intestinal infection by Yersinia enterocolitica serotype O:9 (YeO9) in cattle has been linked to false positive serological reactivity (FPSR) in diagnostic tests for brucellosis. Although eradicated in Ireland, brucellosis monitoring still identifies seropositive animals, usually one or two (termed singletons) per herd, which are classed as FPSR. To investigate a link between FPSR and YeO9, faeces and blood were collected from singleton FPSR cattle, and from companion animals, in eight selected herds with more than one FPSR animal, for YeO9 culture and Brucella serology. YeO9 was isolated from 76/474 (16%) FPSR singletons in 309 herds, but not from any of 621 animals in 122 control non-FPSR herds. In the FPSR herds 52/187 (27.8%) animals were culture positive, and 17% of the isolates were from seronegative animals. Seropositive animals were more likely to have a rising antibody titre when culture positive.
Collections Ireland -> Dublin Institute of Technology -> PubMed

Full list of authors on original publication

Fergus Ryan, John Egan, Seamus Power, Kevin Kenny, Don O'Grady

Experts in our system

Fergus Ryan
Dublin Institute of Technology
Total Publications: 44
J. Egan
Total Publications: 21
K Kenny
University College Dublin
Total Publications: 7
D. O'Grady
Dublin Institute of Technology