Next Article in Journal
Systematic Analysis of Long Noncoding RNA and mRNA in Granulosa Cells during the Hen Ovulatory Cycle
Next Article in Special Issue
Genomic Epidemiology of Shiga Toxin-Producing Escherichia coli Isolated from the Livestock-Food-Human Interface in South America
Previous Article in Journal
Genome-Wide Association Studies of Somatic Cell Count in the Assaf Breed
Previous Article in Special Issue
Detection of Antimicrobial Residues in Poultry Litter: Monitoring a Risk through a Selective and Sensitive HPLC–MS/MS Method
Article

Screening the Presence of Non-Typhoidal Salmonella in Different Animal Systems and the Assessment of Antimicrobial Resistance

1
Facultad de Ciencias de la Vida, Universidad Andres Bello, Republica 440, Santiago 8320000, Chile
2
Millennium Initiative for Collaborative Research on Bacterial Resistance (MICROB-R), Santiago 7550000, Chile
3
Department of Disease Control, Faculty of Infectious & Tropical Diseases, London School of Hygiene & Tropical Medicine, London WC1E 7HT, UK
4
Antimicrobial Resistance Centre, London School of Hygiene & Tropical Medicine, London WC1E 7HT, UK
5
Departamento de Medicina Preventiva, Facultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile, Santa Rosa 11735, La Pintana, Santiago 8820000, Chile
6
Escuela de Medicina Veterinaria, Pontificia Universidad Católica de Chile, Santiago 7810000, Chile
*
Author to whom correspondence should be addressed.
Academic Editor: Amit Vikram
Animals 2021, 11(6), 1532; https://doi.org/10.3390/ani11061532
Received: 27 April 2021 / Revised: 18 May 2021 / Accepted: 21 May 2021 / Published: 24 May 2021
(This article belongs to the Special Issue The Impact of Emerging Hazards in Animal Production)
In this study, for the first time in Chile, we compared resistance profiles of Salmonella strains isolated from 4047 samples from domestic and wild animals. A total of 106 Salmonella strains (2.61%) were isolated, and their serogroups were characterized and tested for susceptibility to 16 different antimicrobials. This study reports 47 antimicrobial-resistant (AMR) Salmonella strains (44.3% of total strains). Of the 47, 28 corresponded to single-drug resistance (26.4%) and 19 to multidrug resistance (17.9%). The association between AMR and a subset of independent variables was evaluated using multivariate logistic models. Interestingly, S. Enteritidis was highly persistent in animal production systems; however, we report that serogroup D strains were 18 times less likely to be resistant to at least one antimicrobial agent than the most common serogroup (serogroup B). The antimicrobials presenting the greatest contributions to AMR were ampicillin, streptomycin and tetracycline.
Salmonella is a major bacterial foodborne pathogen that causes the majority of worldwide food-related outbreaks and hospitalizations. Salmonellosis outbreaks can be caused by multidrug-resistant (MDR) strains, emphasizing the importance of maintaining public health and safer food production. Nevertheless, the drivers of MDR Salmonella serovars have remained poorly understood. In this study, we compare the resistance profiles of Salmonella strains isolated from 4047 samples from domestic and wild animals in Chile. A total of 106 Salmonella strains (2.61%) are isolated, and their serogroups are characterized and tested for susceptibility to 16 different antimicrobials. The association between antimicrobial resistance (AMR) and a subset of independent variables is evaluated using multivariate logistic models. Our results show that 47 antimicrobial-resistant strains were found (44.3% of the total strains). Of the 47, 28 correspond to single-drug resistance (SDR = 26.4%) and 19 are MDR (17.9%). S. Enteritidis is highly persistent in animal production systems; however, we report that serogroup D strains are 18 times less likely to be resistant to at least one antimicrobial agent than the most common serogroup (serogroup B). The antimicrobials presenting the greatest contributions to AMR are ampicillin, streptomycin and tetracycline. Additionally, equines and industrial swine are more likely to acquire Salmonella strains with AMR. This study reports antimicrobial-susceptible and resistant Salmonella in Chile by expanding the extant literature on the potential variables affecting antimicrobial-resistant Salmonella. View Full-Text
Keywords: non-typhoidal Salmonella; screening of Salmonella; Salmonella serogroup D; multidrug-resistant; antimicrobial-resistant; Chile non-typhoidal Salmonella; screening of Salmonella; Salmonella serogroup D; multidrug-resistant; antimicrobial-resistant; Chile
Show Figures

Figure 1

MDPI and ACS Style

Rivera, D.; Allel, K.; Dueñas, F.; Tardone, R.; Soza, P.; Hamilton-West, C.; Moreno-Switt, A.I. Screening the Presence of Non-Typhoidal Salmonella in Different Animal Systems and the Assessment of Antimicrobial Resistance. Animals 2021, 11, 1532. https://doi.org/10.3390/ani11061532

AMA Style

Rivera D, Allel K, Dueñas F, Tardone R, Soza P, Hamilton-West C, Moreno-Switt AI. Screening the Presence of Non-Typhoidal Salmonella in Different Animal Systems and the Assessment of Antimicrobial Resistance. Animals. 2021; 11(6):1532. https://doi.org/10.3390/ani11061532

Chicago/Turabian Style

Rivera, Dácil, Kasim Allel, Fernando Dueñas, Rodolfo Tardone, Paula Soza, Christopher Hamilton-West, and Andrea I. Moreno-Switt 2021. "Screening the Presence of Non-Typhoidal Salmonella in Different Animal Systems and the Assessment of Antimicrobial Resistance" Animals 11, no. 6: 1532. https://doi.org/10.3390/ani11061532

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop