Research Communications of the 27(th) ECVIM-CA Congress: Intercontinental, Saint Julian's, Malta, 14th to 16th September 2017

The laboratory work for this abstract was performed at the Doherty Institute, which is affiliated with the University of Melbourne. The fluoroquinolone-resistant (FQ R ) O25b-H30 subclone of E. coli sequence type 131 (ST131-O25b-H30), with its nested ESBL (CTX-M-15)-associated H30Rx subset, is the most global disseminated virulent B2 group E. coli multidrug-resistant lineage causing infection in humans. Within phylogenetic group D, the sequence type 648 complex (STc648) is another human increasingly resistance-associated E. coli lineage. This study aimed to detect and evaluate the prevalence of human pandemic clones among E. coli strains causing urinary tract infection in companion animals and to characterize their virulence and antimicrobial resistance.