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

Journal of the Japan Veterinary Medical Association Pub Date : 2021-09-20 DOI:10.12935/jvma.74.569

Tetsuya Kakita, S. Okano, T. Kato, Masato Miyahira, Taketoshi Takara, Yumani Kuba, M. Nidaira, H. Kyan

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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 wide-ly found in Okinawa; therefore, it is essential to monitor their prevalence.

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冲绳地区猪和肉鸡中移动粘菌素耐药基因阳性肠杆菌科和碳青霉烯耐药肠杆菌科的流行情况

碳青霉烯耐药肠杆菌科(CRE)和移动粘菌素耐药基因阳性肠杆菌科引起的传染病已引起医学界和畜牧业的关注。本研究调查了冲绳地区猪和肉鸡中CRE和移动粘菌素耐药基因阳性肠杆菌科的流行情况，作为耐药菌控制的指标。虽然CRE未检出，但大肠杆菌、弗格森杆菌、阿尔伯氏杆菌和肺炎克雷伯氏菌等肠杆菌科细菌中分别检出了mcr-1、mcr-3和mcr-5流动耐药基因，检出率分别为38.1%(137/360)和41.8%(141/346)。由于菌株是使用SuperPolymyxin培养基(粘菌素耐药菌株的选择培养基)分离的，因此阳性率可能高于先前报道的阳性率。冲绳地区广泛存在粘菌素耐药基因阳性肠杆菌科;因此，必须监测其流行情况。

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Journal of the Japan Veterinary Medical Association

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