Prevalence of Antibiotic Resistance and Virulence Genes in Escherichia coli Carried by Migratory Birds on the Inner Mongolia Plateau of Northern China from 2018 to 2023

文献类型： 外文期刊

第一作者： Wang, Danhong

作者： Wang, Danhong;Yin, Yuhe;Wang, Danhong;Ji, Xue;Jiang, Bowen;Yuan, Yue;Liang, Bing;Sun, Shiwen;Zhu, Lingwei;Liu, Jun;Guo, Xuejun;Sun, Yang;Ji, Xue;Jiang, Bowen;Yuan, Yue;Liang, Bing;Sun, Shiwen;Zhu, Lingwei;Liu, Jun;Guo, Xuejun;Sun, Yang

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关键词： migratory birds; Escherichia coli; multidrug resistance; virulence genes; MDR transmission; East Asian-Australasian Flyway

期刊名称：MICROORGANISMS （ 影响因子：4.1； 五年影响因子：4.5 ）

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年卷期： 2024 年 12 卷 6 期

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收录情况： SCI

摘要： (1) Background: Antibiotic resistance in bacteria is an urgent global threat to public health. Migratory birds can acquire antibiotic-resistant and pathogenic bacteria from the environment or through contact with each other and spread them over long distances. The objectives of this study were to explore the relationship between migratory birds and the transmission of drug-resistant pathogenic Escherichia coli. (2) Methods: Faeces and swab samples from migratory birds were collected for isolating E. coli on the Inner Mongolia Plateau of northern China from 2018 to 2023. The resistant phenotypes and spectra of isolates were determined using a BD Phoenix 100 System. Conjugation assays were performed on extended-spectrum beta-lactamase (ESBL)-producing strains, and the genomes of multidrug-resistant (MDR) and ESBL-producing isolates were sequenced and analysed. (3) Results: Overall, 179 isolates were antibiotic-resistant, with 49.7% MDR and 14.0% ESBL. Plasmids were successfully transferred from 32% of ESBL-producing strains. Genome sequencing analysis of 91 MDR E. coli strains identified 57 acquired resistance genes of 13 classes, and extraintestinal pathogenic E. coli and avian pathogenic E. coli accounted for 26.4% and 9.9%, respectively. There were 52 serotypes and 54 sequence types (STs), including ST48 (4.4%), ST69 (4.4%), ST131 (2.2%) and ST10 (2.2%). The international high-risk clonal strains ST131 and ST10 primarily carried bla(CTX-M-27) and bla(TEM-176). (4) Conclusions: There is a high prevalence of multidrug-resistant virulent E. coli in migratory birds on the Inner Mongolian Plateau. This indicates a risk of intercontinental transmission from migratory birds to livestock and humans.

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