Characteristic analyses of prevalence and antimicrobial resistances of Listeria monocytogenes in ready-to-eat foods in Hebei Province from 2005 to 2013
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(Hebei Province Center for Disease Prevention and Control,Hebei Shijiazhuang 050021,China)

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    Abstract:

    To evaluate the prevalence and antimicrobial resistances of Listeria monocytogenes in ready-to-eat foods in Hebei Province from 2005 to 2013.MethodsThe detection of L.monocytogenes was referred to GB/T 4789.30. The antimicrobial susceptibility was determined by broth microdilution susceptibility testing. ResultsTotal prevalence of L.monocytogenes was 1.34% in ready-to-eat foods, in which the higher prevalence in cold dish or salad was 2.62%, and 2.51% in raw aquatic products. Among 15 antimicrobials, 13.97% strains resistant to one or more antibiotics. The resistant rate of chloramphenicol, tetracycline and sulfamethoxazole, doxycycline and ciprofloxacin were the top three, which were 7.35%, 4.41% and 2.94%, respectively. All strains were sensitive to penicillin, imipenem, cefalotin, rifampicin and ampicillin-sulbactam.ConclusionThere was a certain degree of L.monocytogenes contamination in ready-to-eat foods in Hebei Province. It was suggested that the antimicrobial resistance was serious and grow rapidly. More attention should be paid to the supervision of ready-to-eat foods to ensure food safety and public health.

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ZHANG Shu-hong, HOU Feng-ling, GUAN Wen-ying, SHEN Zhi-xin. Characteristic analyses of prevalence and antimicrobial resistances of Listeria monocytogenes in ready-to-eat foods in Hebei Province from 2005 to 2013[J].中国食品卫生杂志,2014,26(6):596-599.

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  • Received:August 12,2014
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  • Online: December 19,2014
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