Prevalence of Mobile Colistin Resistance Gene-positive <i>Enterobacteriaceae</i> and Carbapenem-resistant <i>Enterobacteriaceae</i> in Swine and Broiler Chicken in Okinawa

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  • KAKITA Tetsuya
    Department of Biological Sciences, Okinawa Prefectural Institute of Health and Environment
  • OKANO Sho
    Chuo Meat Hygiene Inspection Center
  • KATO Takashi
    Chuo Meat Hygiene Inspection Center
  • MIYAHIRA Masato
    Department of Biological Sciences, Okinawa Prefectural Institute of Health and Environment
  • TAKARA Taketoshi
    Department of Biological Sciences, Okinawa Prefectural Institute of Health and Environment
  • KUBA Yumani
    Department of Biological Sciences, Okinawa Prefectural Institute of Health and Environment
  • NIDAIRA Minoru
    Department of Biological Sciences, Okinawa Prefectural Institute of Health and Environment
  • KYAN Hisako
    Department of Biological Sciences, Okinawa Prefectural Institute of Health and Environment

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Other Title
  • 沖縄県の豚，鶏におけるコリスチン耐性遺伝子保有腸内細菌科細菌及びカルバペネム耐性腸内細菌科細菌の保有実態
  • オキナワケン ノ ブタ,ニワトリ ニ オケル コリスチン タイセイ イデンシ ホユウ チョウ ナイ サイキンカ サイキン オヨビ カルバペネム タイセイ チョウ ナイ サイキンカ サイキン ノ ホユウ ジッタイ

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Abstract

Infectious diseases caused by carbapenem-resistant Enterobacteriaceae (CRE) and mobile colistin resistance gene-positive Enterobacteriaceae have attracted attention in the medical and animal husbandry fields. In this study, we investigated the prevalence of CRE and mobile colistin resistance gene-positive Enterobacteriaceae in swine and broiler chicken in Okinawa as an indicator of resistant bacterial control. Although CRE was not detected, mobile colistin resistance genes mcr-1, mcr-3, and mcr-5 in Enterobacteriaceae such as Escherichia coli, Escherichia fergusonii, Escherichia albertii, and Klebsiella pneumoniae were found in 38.1% (137/360) and 41.8% (141/346) of the healthy swine and diseased broiler chickens, respectively. Because bacterial strains were isolated using SuperPolymyxin medium, a selection medium for colistin-resistant strains, the positive rate might be higher than those previously reported. Colistin resistance gene-positive Enterobacteriaceae are widely found in Okinawa; therefore, it is essential to monitor their prevalence.

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