Molecular epidemiology and transmission of rmtB-positive Escherichia coli among ducks and environment.

ABSTRACT: This study aimed to investigate the transmission and molecular epidemiological characteristics of the rmtB gene in Escherichia coli (E. coli) strains isolated from duck farms in Guangdong Province of China from 2018 to 2021. A total of 164 (19.4%, 164/844) rmtB-positive E. coli strains were recovered from feces, viscera, and environment. We performed antibiotic susceptibility tests, pulsed-field gel electrophoresis (PFGE), and conjugation experiments. We obtained the genetic context of 46 rmtB-carrying E. coli isolates and constructed a phylogenetic tree via whole genome sequencing (WGS) and bioinformatic analysis. The isolation rate of rmtB-carrying E. coli isolates in duck farms increased yearly from 2018 to 2020 but decreased in 2021. All rmtB-harboring E. coli strains were multidrug re

SUBMITTER: Li G 

PROVIDER: S-EPMC10023955 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature