ScholarDeck

Animal / preclinicalVeterinary research communications · 2026

Antimicrobial resistance profiles of bacterial pathogens from feline urinary tract infections in Rio de Janeiro, Brazil.

Barbara Barreto Oliveira, Camila Alves Maia da Silva, Izabella Brito de Souza … Mariana Severo Ramundo

UrologyAnimal / preclinical

Over half of feline urinary tract infection isolates were multidrug-resistant.

Antimicrobial resistance profiles of bacterial pathogens from feline urinary tract infections in Rio de Janeiro, Brazil.

Barbara Barreto Oliveira et al. · Veterinary research communications · 2026

Purpose

This study characterized the bacterial epidemiology and antimicrobial resistance profiles of 448 isolates recovered from feline urine cultures in Rio de Janeiro, Brazil, between 2020 and 2024.

Results

Multidrug resistance found in more than half of cat urine bacteria, limiting treatment options.

79.5%

Proteus spp.

57.9%

E. coli

More results

Escherichia coli was the predominant pathogen (45.1%), followed by Proteus spp.

Resistance to antimicrobials recommended as first-line options by the ISCAID guidelines was frequent among E. coli isolates, including trimethoprim-sulfamethoxazole (57.2%), cephalexin (52.5%), and amoxicillin-clavulanate (43.9%).

More results

Veterinary fluoroquinolones showed moderate resistance (enrofloxacin 28.5%, marbofloxacin 20.9%), while nitrofurantoin resistance reached 37.7%.

Third-generation cephalosporins and carbapenems retained the highest activity (ceftazidime 13.2%; meropenem 0%).

“

Conclusion

These findings indicate that resistance to first-line agents is common in feline uropathogens in this setting and support the routine use of urine culture and antibiotic susceptibility testing to guide antimicrobial therapy.

Post

Antimicrobial resistance profiles of bacterial pathogens from feline urinary tract infections in Rio de Janeiro, Brazil.

Over half of feline urinary tract infection isolates were multidrug-resistant.

Related papers