Peer-reviewed veterinary case report
Antibiotic resistance in bacteria from dog urine in New Zealand
By McMeekin, C H et al.·Published in New Zealand veterinary journal·2017·a Institute of Veterinary·View original on PubMed →
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Original publication title: Antimicrobial resistance patterns of bacteria isolated from canine urinary samples submitted to a New Zealand veterinary diagnostic laboratory between 2005-2012.
- Species:
- dog
Plain-English summary
A study looked at urine samples from dogs in New Zealand to find out which bacteria were causing urinary tract infections and how resistant they were to common antibiotics. Over the years from 2005 to 2012, they found that a lot of the bacteria, especially E. coli, were becoming resistant to antibiotics like amoxicillin-clavulanic acid and cephalothin. This means that some treatments might not work as well as they used to. It's important for veterinarians to know about these resistance patterns to choose the best treatment for dogs with urinary infections.
People also search for: dog urinary tract infection treatment · E. coli resistance in dogs · antibiotics for dog bladder infection
Abstract
AIMS: To identify and describe culture and antimicrobial resistance (AMR) patterns in bacteria isolated from canine urinary samples submitted to a New Zealand veterinary diagnostic laboratory. METHODS: Records from a veterinary diagnostic laboratory were examined for bacterial isolates cultured from canine urine samples between January 2005 and December 2012. Culture and susceptibility results were compiled with information on the age, sex and breed of dog. Repeat submissions were removed. Susceptibility was assessed using results of the Kirby-Bauer disk diffusion method, for a standard panel including amoxicillin-clavulanic acid (AMC), cefovecin (from 2010-2012), cephalothin, clindamycin, enrofloxacin and trimethoprim-sulphonamide (TMS). RESULTS: A total of 5,786 urine samples were submitted for analysis, and 3,135 bacterial isolates were cultured from 2,184 samples. Of these 3,135 isolates, 1,104 (35.2%) were Escherichia coli, 442 (14.1%) were Staphylococcus spp., 357 (11.4%) Proteus mirabilis and 276 (8.8%) were Enterococcus spp. The frequency of culture-positive samples increased with increasing age in both female and male dogs (p<0.001). The percentage of E. coli isolates resistant to AMC and cephalothin increased between 2005 and 2012 (p<0.001), as did resistance to enrofloxacin (p=0.022), but there was no change in resistance to TMS (p=0.696). Enrofloxacin was the antimicrobial with the least resistance shown by the four most common bacteria isolated during the course of the study. CONCLUSIONS AND CLINICAL RELEVANCE: The results of this study provide important regional information regarding the prevalence of bacterial uropathogens and their susceptibility patterns. There was an increase in resistance to some commonly used antimicrobials in the treatment of urinary tract infections. Having access to regional antimicrobial susceptibility results is crucial when forming guidelines for the use of antimicrobials for the treatment of urinary tract infections. Given changes in practising habits and antimicrobial usage over time, ongoing monitoring and surveillance of resistance in pathogens is needed.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/27842208/