Abstract Salmonella is one of the major causes of foodborne outbreaks and numerous studies have reported the presence of its serovars in foodborne outbreaks. Identification of the most prevalent serovars, common polluted food types and attention to the antibiotic resistance of its serovars, are therefore key factors in the prevention and control of salmonellosis. The aim of this study is thus isolation of the common Salmonella serovars, identification of corresponding food categories and determination of their antibiotic resistance status in the stool samples of people poisoned in foodborne outbreaks in Iran during the period 2013 to 2019. Salmonella strain was isolated with serotyping and antibiogram test on 1425 collected stools. among them, 83 samples (5.8%) contain salmonella strain .The most frequent serovars were S. enteritidisand S. senftenberg, respectively (26.3%, 21.3%). The highest salmonellosis incidence rates were observed in the consumption of cooked meat (64.2%) then fruits and vegetables (21.4%). According to our findings, an increase in the prevalence of Salmonella senftenberg in foodborne outbreaks with 5.3% resistance to extended spectrum cephalosporins such as ceftazidime and cefotaxime, and a decrease in cefepime sensitivity and nalidixic acid resistance could be warnings of the emergence of this serovar with increasing antibiotic resistance.

中文翻译：

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从食源性疾病暴发中分离出的常见肠道沙门氏菌血清型的抗生素耐药性和流行率评估

摘要 沙门氏菌是食源性暴发的主要原因之一，许多研究报告了其血清型在食源性暴发中的存在。因此，最流行的血清型的鉴定、常见的污染食物类型以及对其血清型的抗生素耐药性的关注，是预防和控制沙门氏菌病的关键因素。因此，本研究的目的是在 2013 年至 2019 年期间在伊朗食源性疾病暴发中中毒的人的粪便样本中分离常见沙门氏菌血清型，确定相应的食物类别并确定其抗生素抗性状态。对 1425 份收集的粪便进行血清分型和抗菌谱测试。其中，83份样本（5.8%）含有沙门氏菌菌株。最常见的血清型为肠炎沙门氏菌和沙门氏菌。senftenberg，分别为（26.3%、21.3%）。食用熟肉 (64.2%) 然后是水果和蔬菜 (21.4%) 观察到沙门氏菌病的发病率最高。根据我们的研究结果，食源性暴发中森夫滕贝格沙门氏菌的流行率增加，对头孢他啶和头孢噻肟等超广谱头孢菌素的耐药率为 5.3%，而头孢吡肟敏感性和萘啶酸耐药性的降低可能是这种血清型出现的警告增加抗生素耐药性。