Barmettler Karen, Kelbert Lucien, Horlbog Jule Anna, Cernela Nicole, Biggel Michael, Stephan Roger
Institute for Food Safety and Hygiene, Vetsuisse Faculty, University of Zurich, Switzerland.
Institute for Food Safety and Hygiene, Vetsuisse Faculty, University of Zurich, Switzerland.
J Food Prot. 2025 Jun 23;88(7):100532. doi: 10.1016/j.jfp.2025.100532. Epub 2025 May 6.
Non-typhoidal Salmonella enterica (NTS) are significant foodborne pathogens responsible for many cases of enterocolitis worldwide, with the increasing threat of antimicrobial resistance (AMR) posing a growing public health concern. Salmonella Infantis has emerged as a predominant multidrug-resistant (MDR) serotype, particularly in poultry. This study investigated the Salmonella prevalence in 200 chicken meat samples from Swiss retail stores. Six (3%) samples tested positive; all were imported, and the isolates were all identified as S. Infantis. Whole genome sequencing confirmed the presence of the pESI (plasmid of emerging S. Infantis) megaplasmid, which is associated with enhanced persistence, biofilm formation, and multidrug resistance. Statistical analysis revealed a significant correlation between Salmonella prevalence and imported, unlabeled products. These findings highlight the effectiveness of Swiss control measures in the poultry production but underscore the importance of maintaining consumer awareness to mitigate Salmonella transmission and MDR risks.
非伤寒型肠炎沙门氏菌（NTS）是重要的食源性病原体，在全球范围内导致许多例小肠结肠炎，随着抗菌药物耐药性（AMR）威胁的增加，引发了越来越多的公共卫生问题。婴儿沙门氏菌已成为主要的多重耐药（MDR）血清型，尤其是在家禽中。本研究调查了来自瑞士零售店的200份鸡肉样本中的沙门氏菌流行情况。六个（3%）样本检测呈阳性；所有样本均为进口，分离株均被鉴定为婴儿沙门氏菌。全基因组测序证实存在pESI（新兴婴儿沙门氏菌质粒）大质粒，其与增强的持久性、生物膜形成和多重耐药性有关。统计分析显示沙门氏菌流行率与进口的无标签产品之间存在显著相关性。这些发现突出了瑞士在家禽生产中控制措施的有效性，但强调了保持消费者意识以减轻沙门氏菌传播和多重耐药风险的重要性。
