title: Occurrence of antimicrobial resistant bacteria in healthy dogs and cats presented to private veterinary hospitals in southern Ontario: A preliminary study.
abstract: The prevalence and patterns of antimicrobial susceptibility of fecal Escherichia coli, Salmonella spp., extended beta-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.
authors.affiliation: Department of Population Medicine, University of Guelph, Ontario, Canada.
authors.forename: Colleen
authors.initials: C
authors.lastname: Murphy
authors.forename: Richard J
authors.initials: RJ
authors.lastname: Reid-Smith
authors.forename: John F
authors.initials: JF
authors.lastname: Prescott
authors.forename: Brenda N
authors.initials: BN
authors.lastname: Bonnett
authors.forename: Cornelis
authors.initials: C
authors.lastname: Poppe
authors.forename: Patrick
authors.initials: P
authors.lastname: Boerlin
authors.forename: J Scott
authors.initials: JS
authors.lastname: Weese
authors.forename: Nicol
authors.initials: N
authors.lastname: Janecko
authors.forename: Scott A
authors.initials: SA
authors.lastname: McEwen
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D002415:Cats / Q000382:microbiology*; D004197:Disease Reservoirs / Q000382:microbiology / Q000662:veterinary; D004285:Dogs / Q000382:microbiology*; D024881:Drug Resistance, Bacterial; D024901:Drug Resistance, Multiple, Bacterial; D004926:Escherichia coli / Q000187:drug effects* / Q000302:isolation & purification; D005243:Feces / Q000382:microbiology; D005260:Female; D008297:Male; D055624:Methicillin-Resistant Staphylococcus aureus / Q000187:drug effects / Q000302:isolation & purification; D008826:Microbial Sensitivity Tests / Q000662:veterinary; D009864:Ontario / Q000453:epidemiology; D015995:Prevalence
chemical_list: D000900:Anti-Bacterial Agents