Antimicrobial resistance profiles of rare Salmonella serovars isolated from chickens
Abstract
Salmonella infections are regarded as a leading global cause of foodborne illnesses in humans, with poultry products frequently identified as sources of these infections. Therefore, understanding the epidemiology and antimicrobial resistance profiles of Salmonella is essential for minimising its impact on both animal health and public safety. Boot swabs were collected from chicken farms in different regions of Türkiye and tested for the presence of Salmonella. Following serotyping, antimicrobial susceptibility testing of Salmonella strains was performed using the disk diffusion method. Thirteen rare serovars, including Agbeni, Bahrenfeld, Bredeney, Braenderup, Barranquilla, Caen, Eppendorf, Grampian, Isangi, Kimuenza, Othmarschen, and Rissen were identified. High levels of resistance were observed to ciprofloxacin; nine isolates were resistant to more than one antibiotic, and four were multidrug-resistant. The representativeness of the antimicrobial resistance profiles of the samples for the whole country or the geographical area is unclear. This study provides the first documentation of aforementioned Salmonella serovars in chicken flocks in Türkiye, underscoring the occurrence of multidrug resistance among these serovars. The identification of rare, multidrug-resistant Salmonella serovars in poultry signifies a potential emerging threat to animal health, food safety, and public health.
Keywords
References
- Antunes P, Mourão J, Campos J, et al (2016): Salmonellosis: the role of poultry meat. Clin Microbiol Infect, 22, 110-121.
- Aworh MK, Nilsson P, Egyir B, et al (2024): Rare serovars of non-typhoidal Salmonella enterica isolated from humans, beef cattle and abattoir environments in Nigeria. PLoS One, 19, e0296971.
- Ball T, Monte D, Aidara-Kane A, et al (2020): International lineages of Salmonella enterica serovars isolated from chicken farms, Wakiso District, Uganda. PLoS One, 15, e0220484.
- Ben Salem R, Abbassi MS, García V, et al (2016): Detection and molecular characterization of Salmonella enterica serovar Eppendorf circulating in chicken farms in Tunisia. Zoonoses Public Health, 63, 320-327.
- Castro-Vargas RE, Herrera-Sánchez MP, Rodríguez-Hernández R, et al (2020): Antibiotic resistance in Salmonella spp. isolated from poultry: A global overview. Vet World, 13, 2070-2084.
- Chaggar HK, Hudson LK, Orejuela K, et al (2025): Salmonella enterica serovar Braenderup shows clade-specific source associations and a high proportion of molecular epidemiological clustering. Appl Environ Microbiol, 91, e0259424.
- CLSI (2024): CLSI M100 Performance Standards for Antimicrobial Susceptibility Testing. Clinical and Laboratory Standards Institute, Wayne, USA.
- Cortés V, Sevilla-Navarro S, García C, et al (2022): Monitoring antimicrobial resistance trends in Salmonella spp. from poultry in Eastern Spain. Poult Sci, 101, 101832.
Details
Primary Language
English
Subjects
Veterinary Bacteriology, Veterinary Microbiology
Journal Section
Research Article
Authors
Mehmet Akan
0000-0002-7342-1450
Türkiye
Early Pub Date
January 16, 2026
Publication Date
January 16, 2026
Submission Date
August 21, 2025
Acceptance Date
November 24, 2025
Published in Issue
Year 2026 Volume: 73 Number: 2