Clonal complex Pseudomonas aeruginosa in horses

Timothy J Kidd, Justine S Gibson, Susan Moss, Ristan M Greer, Rowland N Cobbold, John D Wright, Kay A Ramsay, Keith Grimwood, Scott C Bell

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


Pseudomonas aeruginosa is associated with infectious endometritis in horses. Although infectious endometritis is often considered a venereal infection, there is relatively limited genotypic-based evidence to support this mode of transmission. The study sought to determine the relatedness between genital P. aeruginosa isolates collected from a limited geographical region using molecular strain typing. Enterobacterial repetitive intergenic consensus PCR typing was performed on 93 isolates collected between 2005 and 2009 from 2058 thoroughbred horses (including 18 stallions) at 66 studs. While P. aeruginosa was not detected in the stallions, 53/93 (57%) mares harbouring P. aeruginosa had clonally related strains, which included a single dominant genotype detected in 42 (45%) mares from 13 different studs. These novel findings suggest that most equine genital P. aeruginosa infections in this region may have been acquired from mechanisms other than direct horse to horse transmission. Instead, other potential acquisition pathways, as well as strain specific adaptation to the equine genital tract, should be investigated.

Original languageEnglish
Pages (from-to)508-12
Number of pages5
JournalVeterinary Microbiology
Issue number3-4
Publication statusPublished - 05 May 2011

Bibliographical note

Copyright © 2010 Elsevier B.V. All rights reserved.


  • Animals
  • Bacterial Typing Techniques
  • DNA, Bacterial
  • Female
  • Genotype
  • Horse Diseases
  • Horses
  • Male
  • Multilocus Sequence Typing
  • Polymerase Chain Reaction
  • Pseudomonas Infections
  • Pseudomonas aeruginosa
  • Queensland
  • Reproductive Tract Infections


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