Prevalence and antimicrobial resistance of foodborne pathogens in select fresh produce procured from farmers' markets in Central Virginia,Journal of Food Safety

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Prevalence and antimicrobial resistance of foodborne pathogens in select fresh produce procured from farmers' markets in Central Virginia
Journal of Food Safety ( IF 1.9 ) Pub Date : 2021-03-16 , DOI: 10.1111/jfs.12895
Chyer Kim ₁ , Rehab Almuqati ₂ , Abeer Fatani ₂ , Alireza Rahemi ₁ , Paul Kaseloo ₂ , Crystal Wynn ₃ , Theresa Nartea ₄ , Eunice Ndegwa ₁ , Laban Rutto ₁

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As farmers' markets have increased in size, scope, and complexity, so have potential food-safety challenges and implications. Most products sold at farmers' markets may receive minimal to no treatment of decontamination which could increase their potential microbial risks. The aim of this study was to assess the prevalence and antimicrobial resistance (AMR) of foodborne pathogens in select fresh produce procured from farmers' markets in Central Virginia. A total of 138 samples produced by 15 farms and sold at 9 registered farmers' markets were obtained between March and November 2017. Campylobacter, Escherichia coli, and Listeria were, respectively, detected in 8.7, 9.4, and 8.0% of the samples. A total of 46 bacterial isolates consisted of Campylobacter, E. coli, and Listeria were tested for their susceptibility to 12 antimicrobials. Ampicillin resistance showed the highest frequency among Campylobacter (100%) and E. coli (47.8%) isolates while nalidixic acid resistance was the highest in Listeria isolates (72.7%). At least 17% of each Campylobacter, E. coli, and Listeria isolates exhibited multidrug resistance (MDR). No isolates had matching pulsed-field gel electrophoresis (PFGE) profiles demonstrating that the E. coli isolates had a high degree of genomic diversity. This study demonstrated a potential health hazard arising from farmers' market-acquired fresh produce and emphasizes the importance of good agricultural and handling practices to prevent foodborne illness and spread of multidrug antibiotic resistance. Continued research is needed to determine and intervene the cause(s) of the observed prevalence and to support the healthy development of food products sold at farmers' markets.

中文翻译：

从弗吉尼亚中部农贸市场采购的精选新鲜农产品中食源性病原体的流行率和抗菌素耐药性

随着农贸市场规模、范围和复杂性的增加，潜在的食品安全挑战和影响也随之增加。大多数在农贸市场出售的产品可能很少或没有经过去污处理，这可能会增加其潜在的微生物风险。本研究的目的是评估从弗吉尼亚中部农贸市场采购的精选新鲜农产品中食源性病原体的流行率和抗菌素耐药性 (AMR)。2017 年 3 月至 11 月期间，共采集了 15 个农场生产并在 9 个注册农贸市场销售的 138 个样本。弯曲杆菌、大肠杆菌和李斯特菌分别在 8.7%、9.4% 和 8.0% 的样本中被检出。共 46 株细菌测试了弯曲杆菌、大肠杆菌和李斯特菌对 12 种抗菌剂的敏感性。氨苄青霉素耐药性在弯曲杆菌(100%) 和大肠杆菌(47.8%) 分离株中出现频率最高，而萘啶酸耐药性在李斯特菌分离株中最高(72.7%)。至少 17% 的弯曲杆菌、大肠杆菌和李斯特菌分离株表现出多药耐药性 (MDR)。没有分离株具有匹配的脉冲场凝胶电泳 (PFGE) 谱证明大肠杆菌分离株具有高度的基因组多样性。这项研究证明了农民从市场上购买的新鲜农产品可能对健康造成危害，并强调了良好的农业和处理实践对预防食源性疾病和多药抗生素耐药性传播的重要性。需要继续研究以确定和干预观察到的流行的原因，并支持在农贸市场销售的食品的健康发展。

更新日期：2021-03-16

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