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Surveillance of antimicrobial resistance in Escherichia coli and enterococci from food products at retail in Beijing, China
Food Control ( IF 5.6 ) Pub Date : 2021-01-01 , DOI: 10.1016/j.foodcont.2020.107483 Chengtao Sun , Yingchao Wang , Shizhen Ma , Shan Zhang , Dejun Liu , Yang Wang , Congming Wu
Food Control ( IF 5.6 ) Pub Date : 2021-01-01 , DOI: 10.1016/j.foodcont.2020.107483 Chengtao Sun , Yingchao Wang , Shizhen Ma , Shan Zhang , Dejun Liu , Yang Wang , Congming Wu
Abstract Public health intervention priorities to control the spread of antimicrobial resistance in the food sector rely on a comprehensive understanding of its situation among various food products. By analyzing a set of fifteen different kinds of food products (n = 495) collected at retail in Beijing, China, we found the food-animal products, vegetables, aquatic products and fruits were highly contaminated by E. coli (38.4%, 95% CI: 34.1%-42.8%) and enterococci (74.5%, 95% CI: 70.5%-78.3%), showing a multidrug-resistance (MDR) proportion of 20.3% and 39.5%, respectively. With the highest incidence of E. coli (66.7%, 95% CI: 57.9%-74.6%) and enterococci (80.3%, 95% CI: 72.5%-86.7%), as well as the high MDR proportion; the food-animal products were indeed the most important reservoir of antimicrobial resistance; although the role of vegetables, fruits and aquatic products in the spreading AMR shouldn't be downplayed. These food-borne isolates were highly resistant to antibiotic that are widely used in agriculture, such as tetracycline (E. coli, 65.8%; enterococci, 36.9%) and ampicillin (E. coli, 60.5%), and also to antibiotics that are barely used in the agriculture/aquaculture, such as rifampin (enterococci, 55.3%) and ciprofloxacin (enterococci, 36.9%). Moreover, we observed positive correlations between food types and some particular resistance phenotypes of the isolates. In addition, genes coding resistance to clinical important antibiotics, mcr-1 (colistin) and optrA (oxazolidinones), were detected in the food-borne isolates and showed by bioinformatics analysis a potential in connecting animals and humans.
更新日期：2021-01-01
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