Prevalence and Antimicrobial Resistance of <i>Salmonella</i> Strains Isolated from Chicken Samples in Southern Italy

Prevalence and Antimicrobial Resistance of <i>Salmonella</i> Strains Isolated from Chicken Samples in Southern Italy

Salmonellosis is one of the most frequent foodborne zoonoses, and the consumption of contaminated poultry meat is considered the main source of <i>Salmonella</i> infections in humans. From 2021 to 2023, 384 chicken samples were collected from retailers in Apulia and Basilicata regions an...

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Main Authors: Pietro Di Taranto, Fiorenza Petruzzi, Giovanni Normanno, Carmine Pedarra, Gilda Occhiochiuso, Simona Faleo, Antonella Didonna, Domenico Galante, Lorenzo Pace, Valeria Rondinone, Carmelinda Trisolini, Laura Del Sambro, Matteo Beverelli, Roberta Catanzariti, Marta Caruso, Lucia Palazzo, Adriana Di Castri, Antonio Parisi
Format: Article
Language:English
Published: MDPI AG 2025-01-01
Series:Microorganisms
Subjects:
<i>Salmonella</i> spp.
chicken
serotyping
antimicrobial resistance
Online Access:https://www.mdpi.com/2076-2607/13/2/270
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Summary:Salmonellosis is one of the most frequent foodborne zoonoses, and the consumption of contaminated poultry meat is considered the main source of <i>Salmonella</i> infections in humans. From 2021 to 2023, 384 chicken samples were collected from retailers in Apulia and Basilicata regions and analysed at the Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata (IZSPB) laboratories. The <i>Salmonella</i> isolates were investigated to evaluate their phenotypic characteristics of antimicrobial resistance. A total of 125 (32.55%) samples tested positive for <i>Salmonella</i> spp. Three samples were simultaneously infected with strains of two different serotypes. Strains were classified into nine serotypes. Out of 128 strains, 112 (87.5%) isolates showed multidrug-resistant (MDR) profiles. Moreover, 16 isolates (12.5%) were ESBL producers with MDR profiles. Our data confirm that chicken products are a common source of <i>Salmonella</i> and highlight how <i>S</i>. Infantis was the most prevalent serotype (85.93%). Furthermore, <i>Salmonella</i> isolates showed antimicrobial resistance, which is very worrisome for animals and consumers. The high rate of antibiotic resistance along with the appearance of numerous MDR isolates is considered an actual concern and requires a robust surveillance network in a One Health concept.
ISSN:2076-2607

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