Evaluation of resistance and virulence factors in Salmonella enterica subsp. enterica serovar Thompson isolates in the poultry chain

British Poultry Science 2026

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Authors: S. R. Stahlhofer, V. Peripolli, P. D. Lopes, A. C. Balbinot, J. P. Zuffo, P. G. D. Pires, A. F. Millezi
DOI: 10.1080/00071668.2025.2588244
Cited by: 2
References: 49

Abstract

1.This study investigated antimicrobial resistance and virulence factors in Salmonella enterica subsp. enterica serovar Thompson (SET) isolates from broilers in the Brazilian poultry industry.2. Among 44 isolates, 18.18% showed phenotypic resistance, with tetA, sul1 and sul2 genes frequently detected, while sul3 was absent. Two isolates carried clinically relevant resistance genes: blaCTX-M-1 (ESBL) and OXA-48 (carbapenemase).3. The PFGE analysis revealed five distinct clusters with low genetic diversity, which suggested a clonal dissemination pattern. One strain from cluster E showed the highest pathogenicity in broilers, underscoring the need for continued molecular surveillance in poultry production.

Fields of Study & Subjects

Salmonella and Campylobacter epidemiology Antibiotic Resistance in Bacteria Antimicrobial Resistance in Staphylococcus

Publication details

Journal / source
British Poultry Science
Publisher
Informa UK Limited
Volume
67
Issue
3
Pages
445–456
Publication date
5 January 2026
Language
EN