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Antimicrobial resistance in bacteria isolated from cats and dogs from the Atlantic Provinces, Canada from 1994-2013
Babafela B Awosile1, J Trenton McClure1, Matthew E Saab1
1Department of Health Management (Awosile, McClure, Saab, Heider), Diagnostic Services (Saab), Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, Prince Edward Island.
Abstract:
Antimicrobial susceptibility patterns and trends in bacteria isolated from cats and dogs were determined from diagnostic laboratory data from the Atlantic Veterinary College Diagnostic Services Bacteriology Laboratory over a 20-year period. Clinical samples were most commonly from the urinary tract and the ear. Staphylococcus spp. and Escherichia coli were the bacteria that were most frequently isolated. Increases in percentage resistant were seen with E. coli to cephalexin (57% to 61%), Pasteurella spp. to erythromycin (35% to 53%), and Pseudomonas aeruginosa (31% to 39%), and Streptococcus spp. (46% to 53%) to enrofloxacin. The frequency of resistance did not change significantly over the study period; however, increased enrofloxacin resistance was identified for canine isolates of Staphylococcus spp., Streptococcus spp., Enterococcus spp., E. coli, P. aeruginosa, and Proteus spp. Multidrug resistance was observed in 12% and 9% of the isolates from dogs and cats, respectively. Data from this study could be used to guide empirical antimicrobial selection in companion animal veterinary practices in Atlantic Canada.
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