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
第一作者: Chen, Zhengquan
作者: Chen, Zhengquan;Bai, Jie;Wang, Shaojun;Zhan, Zeqiang;Zhang, Hongxia;Wen, Junping;Gao, Yuan;Liao, Ming;Zhang, Jianmin;Zhang, Xibin;Zhang, Xibin;Shen, Haiyan;Liao, Ming;Shen, Haiyan;Liao, Ming
作者机构:
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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