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Updated: Jun 23, 2026

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High-throughput Assay to Phenotype Salmonella enterica Typhimurium Association, Invasion, and Replication in Macrophages
Published on: August 11, 2014
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PHENOTYPIC RESISTANCE PROFILES OF SALMONELLA ENTERICA ISOLATED FROM WILD FELIDS IN COSTA RICA BETWEEN 2021 AND 2022
Ernesto Rojas-Sanchez1,2, Lohendy Munoz-Vargas2, Mauricio Jimenez-Soto3
1Hospital de Especies Menores y Silvestres, Escuela de Medicina Veterinaria, Universidad Nacional, Heredia, 40104, Costa Rica, ernesto.rojas.sanchez@una.ac.cr.
Summary
Wild felids can carry drug-resistant Salmonella enterica. This study found Salmonella in 100% of samples, with high resistance to common antibiotics, posing risks to public health and wildlife conservation.
Area of Science:
- Veterinary Microbiology
- Wildlife Health
- Antimicrobial Resistance
Background:
- Salmonella enterica is a significant cause of illness.
- Wild animals are increasingly recognized as reservoirs for multidrug-resistant Salmonella.
- Monitoring bacterial resistance is crucial for prevention and control strategies.
Purpose of the Study:
- To identify Salmonella enterica and their antimicrobial resistance profiles in wild felids.
- To assess the public health and conservation implications of resistant Salmonella strains in wildlife.
Main Methods:
- Fecal samples from wild felids receiving veterinary care were collected in Costa Rica during 2021-2022.
- Salmonella spp. were isolated and their resistance profiles to various antibiotics were determined.
Main Results:
- All Salmonella isolates (7/7) showed resistance to cefazoline.
- Resistance was also observed against ciprofloxacin (71%) and nitrofurantoin (43%).
- One isolate exhibited multidrug resistance to ampicillin/sulbactam, cefazolin, ceftriaxone, gentamicin, ciprofloxacin, and nitrofurantoin.
Conclusions:
- Salmonella enterica isolated from wild felids can exhibit concerning resistance patterns, including to commonly used antibiotics.
- These findings underscore the potential threat to public health and wildlife conservation posed by resistant Salmonella.
- A One Health approach is necessary to understand and manage the spread of fluoroquinolone-resistant Salmonella in diverse environments.

