First Report on the Occurrence and Antibiotic Resistance Profile of Colistin-Resistant Escherichia coli in Raw Beef and Cow Feces in Vietnam

被引:0
|
作者
Duc, Hoang Minh [1 ]
Hoa, Tran Thi Khanh [1 ]
Thang, Nguyen Van [2 ]
Son, Hoang Minh [3 ]
机构
[1] Vietnam Natl Univ Agr Trau Quy, Fac Vet Med, Dept Vet Publ Hlth, Gia Lam 12400, Hanoi, Vietnam
[2] Vietnam Natl Univ Agr Trau Quy, Vet Hosp, Fac Vet Med, Gia Lam 12400, Hanoi, Vietnam
[3] Vietnam Natl Univ Agr Trau Quy, Fac Vet Med, Dept Anat & Histol, Gia Lam 12400, Hanoi, Vietnam
关键词
Escherichia coli; colistin; ESBL; raw beef; cow feces; SPECTRUM BETA-LACTAMASE; EXTENDED-SPECTRUM; ANTIMICROBIAL RESISTANCE; IDENTIFICATION;
D O I
10.3390/microorganisms12071305
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Colistin-resistant Escherichia coli (COE) has been recently recognized as a serious threat to animal and human health. This study aimed to determine the prevalence and antibiotic resistance profile of COE isolated from raw beef and cow feces in Vietnam. Our results showed that 16% (16/100) and 32% (32/100) of raw beef and cow feces samples were positive for COE, respectively. A total of 48 COE strains were isolated, with 16 originating from raw beef and 32 from cow feces samples. The antibiotic susceptibility test revealed that the COE isolates were highly resistant to ampicillin, tetracycline, florfenicol, trimethoprim/sulfamethoxazole, streptomycin, and nalidixic acid, with resistance rates ranging from 66.67% to 87.5%. In addition, 87.5% of the isolates were identified to be multidrug-resistant strains. Further molecular characterization indicated that all COE isolates carried the mcr-1 gene, with 16 of them also harboring blaCTX-M-55 genes. Taken together, the findings in this study demonstrate that raw beef and cow feces are important sources of COE, which can be potentially transmitted to humans through the food chain.
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页数:10
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