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Prevalence, Antimicrobial Resistance, Virulence Genes and Genetic Diversity of Salmonella Isolated from Retail Duck Meat in Southern China

文献类型： 外文期刊

作者： Chen, Zhengquan 1 ; Bai, Jie 1 ; Wang, Shaojun 1 ; Zhang, Xibin 2 ; Zhan, Zeqiang 1 ; Shen, Haiyan 4 ; Zhang, Hongxia; 1 ;

作者机构： 1.South China Agr Univ, Natl & Reg Joint Engn Lab Medicament Zoonoses Pre, Coll Vet Med,Minist Agr,Key Lab Zoonoses Prevent, Guangdong Lab Lingnan Modern Agr,Key Lab Zoonoses, Guangzhou 510642, Peoples R China

2.Shandong Agr Univ, Coll Food Sci & Engn, Lab Beef Proc & Qual Control, Tai An 271018, Shandong, Peoples R China

3.New Hope Liuhe Co Ltd, Beijing 100102, Peoples R China

4.Guangdong Acad Agr Sci, Inst Anim Hlth, Key Lab Livestock Dis Prevent Guangdong Prov, Minist Agr, Guangzhou 510640, Guangdong, Peoples R China

5.Guangdong Acad Agr Sci, Sci Observat & Expt Stn Vet Drugs & Diagnost Tech, Key Lab Livestock Dis Prevent Guangdong Prov, Inst Anim Hlth,Minist Agr, Guangzhou 510640, Peoples R China

关键词： retail markets; duck meat; Salmonella; antimicrobial resistance; virulence genes; pulsed-field gel electrophoresis

期刊名称：MICROORGANISMS （ 影响因子：4.128； ）

ISSN：

年卷期： 2020 年 8 卷 3 期

页码：

收录情况： SCI

摘要： Salmonella is an important cause of foodborne diseases. This study was undertaken to investigate the prevalence, serotype distribution, antimicrobial resistance, virulence genes, and genetic diversity of Salmonella isolates recovered from fresh duck meat obtained from retail markets in Southern China. In total, 365 samples of fresh duck meat were collected from retail markets in six different cities of Guangdong Province between May 2017 and April 2019. High levels of Salmonella contamination were detected in duck meat (151/365, 41.4%). Twenty-six different Salmonella serotypes were identified: S. Corvallis (n = 25, 16.6%), S. Kentucky (n = 22, 14.6%) and S. Agona (n = 20, 13.3%) were the most prevalent serotypes. All isolates were resistant to at least one antibiotic and 133 (88.1%) isolates exhibited multidrug resistance (MDR). Most (86.1%) Salmonella isolates carried seven classes of virulence-associated genes. This study showed the diversity of Salmonella serotypes and genotypes and the high prevalence of MDR isolates carrying multiple virulence-associated genes among isolates from duck meat obtained from retail markets in Southern China. Isolates from different districts had similar pulsed-field gel electrophoresis (PFGE) patterns indicating that circulating foodborne Salmonella constitutes a potential public health issue across different districts.

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