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  • Author or Editor: Claudia Cobo-Angel x
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Abstract

OBJECTIVE

This study aims to assess the antimicrobial resistance (AMR) trends among Escherichia coli isolated from cats between 2008 and 2022, utilizing MIC data, within a one-health framework.

SAMPLE

The study analyzed MIC results from 1,477 feline E coli isolates that were obtained from samples submitted to the Cornell University Animal Health Diagnostic Center, primarily from the northeastern US.

METHODS

MIC values were categorized as susceptible or not susceptible using the Clinical and Laboratory Standards Institute breakpoints. Multidrug resistance (MDR) was analyzed using a Poisson regression model. Additionally, accelerated failure time models were employed to analyze MIC values.

RESULTS

Out of the 1,477 E coli isolates examined, 739 (50%) showed susceptibility to all tested antimicrobials. Among the tested antimicrobials, cefazolin (69%) and ampicillin (74% for urinary tract isolates) exhibited the lowest susceptibility. Overall, 15% of isolates were not susceptible to cefovecin. E coli isolates were highly susceptible (> 95%) to antibiotics typically reserved for human use. Almost one-third of the isolates were classified as MDR, with nonurinary isolates more likely to exhibit an MDR pattern. A decrease in MICs for fluoroquinolones and gentamicin in recent years was identified. However, MICs for cephalexin increased from 2016 to 2022 and cefovecin from 2012 to 2019.

CLINICAL RELEVANCE

This study highlights the challenge of AMR in feline medicine, emphasizing the importance of responsible antimicrobial use and surveillance to address E coli AMR. The related Currents in One Health by Cazer et al, JAVMA, December 2023, addresses additional feline antimicrobial stewardship topics.

Open access
in American Journal of Veterinary Research

Abstract

Antimicrobial stewardship encompasses all the individual and collective actions that medical professionals take to preserve the efficacy of antimicrobials. It is a one-health problem, affecting animals and humans. The current state of antimicrobial use in cats, particularly (1) the overuse and improper use of cefovecin, which belongs to the third-generation cephalosporin class that is critically important to human health, and (2) use of antimicrobials when they are not needed, poses unsustainable risks of antimicrobial resistance. This paper describes the principles of antimicrobial stewardship and stewardship challenges faced by feline veterinarians, including (1) poor adherence to or awareness of antimicrobial use guidelines, (2) lack of access to affordable diagnostic tests and antibiograms, (3) lack of access to materials and tools for clients that may facilitate more sustainable antimicrobial use and help cat owners understand resistance risks, (4) underestimating the ability of cat owners to administer oral antimicrobials, and (5) limited time and resources to support stewardship efforts. Based on research described in this paper; an original research article by Cazer et al, JAVMA, December 2023; and a Currents in One Health article by Cobo-Angel et al, AJVR, December 2023, several solutions are proposed to advance antimicrobial stewardship in feline medicine. Many of these proposals were expressly requested by veterinarians interviewed in Cazer et al, JAVMA, December 2023. Education and training of veterinarians and cat owners is an essential step toward sustainable antimicrobial use, but it must be complemented with innovations in diagnostic testing, antimicrobial drug development, structural changes, and technological supports.

Open access
in Journal of the American Veterinary Medical Association