Prevalence of pathogens harbouring mobile antimicrobial resistance genes and virulence factors in retail beef and mutton.,FEMS Microbiology Letters

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Prevalence of pathogens harbouring mobile antimicrobial resistance genes and virulence factors in retail beef and mutton.
FEMS Microbiology Letters ( IF 2.1 ) Pub Date : 2020-06-08 , DOI: 10.1093/femsle/fnaa089
Ying Liu ₁ , Yifang Cui ₂ , Wenjing Peng ₁ , Baoyong Huang ₃ , Lichao Ma ₁ , Min Zheng ₁ , Shuangyang Ding _{4,

5} , Kui Zhu _{1,

4,

5}

Affiliation

Food safety is always a global issue, due to the increased dissemination of antimicrobial resistance and food poisoning related to foodborne bacterial pathogens. The purpose of this study was to assess the risk of potential foodborne bacteria of beef and mutton at retail stores. A total of 134 samples were collected from 24 local markets in Beijing, including raw and cooked beef or mutton, as well as the samples derived from the corresponding environment and human beings. We obtained 674 isolates, of which Klebsiella spp. and Staphylococcus spp. were the dominant bacterial species in the meat samples and the environmental samples, respectively. Additionally, environmental bacteria are common in samples from different sources. Basing on the results of antimicrobial sensitivity test, resistance to tetracycline (with a resistance rate of 47.40%), amoxicillin + clavulanate (47.13%) and erythromycin (28.03%) were the major resistant phenotypes. According to the whole genome analysis, the extended-spectrum beta-lactamase genes harboured by two K. pneumoniae strains isolated from cooked and raw beef were located on mobile elements. The major toxin genes of Bacillus cereus and adhesion- or invasion-related virulence factors were also shared among isolates from different sources. These factors pose potential risks to public health and need attention.

更新日期：2020-06-08

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