Retrospective study on the occurrence of Salmonella serotypes in veterinary specimens of Atlantic Canada (2012-2021).

Publisher: John Wiley & Sons Ltd Country of Publication: England NLM ID: 101678837 Publication Model: Print Cited Medium: Internet ISSN: 2053-1095 (Electronic) Linking ISSN: 20531095 NLM ISO Abbreviation: Vet Med Sci Subsets: MEDLINE

Original Publication: [Oxford] : John Wiley & Sons Ltd., [2015]-

Salmonella*/drug effects ; Salmonella*/isolation & purification ; Salmonella*/genetics ; Salmonella*/classification ; Serogroup* ; Salmonella Infections, Animal*/microbiology ; Salmonella Infections, Animal*/epidemiology; Animals ; Retrospective Studies ; Animals, Wild/microbiology ; Canada/epidemiology ; Livestock/microbiology ; Anti-Bacterial Agents/pharmacology ; Pets/microbiology ; Birds/microbiology ; Microbial Sensitivity Tests/veterinary

Aim: This study aimed to summarize the frequency and the antimicrobial susceptibility profiles of the Salmonella serotypes identified from the specimens of companion animals, livestock, avian, wildlife and exotic species within Atlantic Canada.
Materials and Methods: The retrospective electronic laboratory data of microbiological analyses of a selected subset of samples from 03 January 2012 to 29 December 2021 submitted from various animal species were retrieved. The frequency of Salmonella serotypes identified, and their antimicrobial susceptibility results obtained using the disk diffusion or broth method were analysed. The test results were interpreted according to the Clinical and Laboratory Standards Institute standard. The Salmonella serotypes were identified by slide agglutination (Kauffman-White-Le-Minor Scheme) and/or the Whole Genome Sequencing for the Salmonella in silico Serovar Typing Resource-based identification.
Results: Of the cases included in this study, 4.6% (n = 154) had at least one Salmonella isolate, corresponding to 55 different serovars. Salmonella isolation was highest from exotic animal species (n = 40, 1.20%), followed by porcine (n = 26, 0.78%), and canine (n = 23, 0.69%). Salmonella subsp. enterica serovar Typhimurium was predominant among exotic mammals, porcine and caprine samples, whereas S. Enteritidis was mostly identified in bovine and canine samples. S. Typhimurium of porcine origin was frequently resistant (>70.0%) to ampicillin. In contrast, S. Typhimurium isolates from porcine and caprine samples were susceptible (>70.0%) to florfenicol. S. Oranienburg from equine samples was susceptible to chloramphenicol, but frequently resistant (>90.0%) to azithromycin. In avian samples, S. Copenhagen was susceptible (>90.0%) to florfenicol, whereas Muenchen was frequently resistant (>90.0%) to florfenicol. S. subsp. diarizonae serovar IIIb:61:k:1,5 of ovine origin was resistant (50.0% isolates) to sulfadimethoxine. No significant changes were observed in the antibiotic resistance profiles across the study years.
Conclusions: This report provides data for surveillance studies, distribution of Salmonella serotypes and their antimicrobial resistance among veterinary specimens of Atlantic Canada.
(© 2024 The Author(s). Veterinary Medicine and Science published by John Wiley & Sons Ltd.)

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Keywords: Atlantic Canada; Salmonella; antibiotic resistance; exotic animals; laboratory data

0 (Anti-Bacterial Agents)

Date Created: 20240709 Date Completed: 20240709 Latest Revision: 20240711

20240711

PMC11231644

10.1002/vms3.1530

38979670