Occurrence of antimicrobial resistant bacteria in healthy dogs and cats presented to private veterinary hospitals in southern Ontario: A preliminary study |
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| Authors: | Colleen Murphy Richard J Reid-Smith John F Prescott Brenda N Bonnett Cornelis Poppe Patrick Boerlin J Scott Weese Nicol Janecko Scott A McEwen |
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| Institution: | Department of Population Medicine (Murphy, Reid-Smith, Bonnett, Janecko, McEwen), Department of Pathobiology (Prescott, Boerlin), and Department of Clinical Studies (Weese) Ontario Veterinary College, University of Guelph, Guelph, Ontario N1G 2W1; Laboratory for Foodborne Zoonoses, Public Health Agency of Canada, 160 Research Lane, Unit 103, Guelph, Ontario N1G 5B2 (Reid-Smith) and 110 Stone Road West, Guelph, Ontario N1G 3W4 (Poppe, Boerlin) |
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| Abstract: | The prevalence and patterns of antimicrobial susceptibility of fecal Escherichia coli, Salmonella spp., extended β-lactamase producing E. coli (ESBL-E. coli), methicillin-resistant Staphylococcus aureus (MRSA), and methicillin-resistant Staphylococcus pseudintermedius (MRSP) were determined for healthy dogs (n = 188) and cats (n = 39) from veterinary hospitals in southern Ontario that had not had recent exposure to antimicrobials. The prevalence of antimicrobial resistance in E. coli was as follows: streptomycin (dogs — 17%, cats — 2%), ampicillin (dogs — 13%, cats — 4%), cephalothin (dogs — 13%, cats — < 1%), and tetracycline (dogs — 11%, cats — 2%). Eleven percent of dogs and 15% of cats had isolates that were resistant to at least 2 antimicrobials. Cephamycinase (CMY)-2 producing E. coli was cultured from 2 dogs. No Salmonella spp., ESBL-E. coli, MRSA, or MRSP isolates were recovered. The observed prevalence of resistance in commensal E. coli from this population was lower than that previously reported in companion animals, but a small percentage of dogs may be a reservoir for CMY-2 E. coli. |
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