Longitudinal study on the genetic diversity of extended-spectrum cephalosporin resistant <i>Escherichia coli</i> in Dutch veal calves.

ABSTRACT: The present study aimed to evaluate the genetic diversity of Extended Spectrum Cephalosporin resistant (ESC-R) E. coli isolates obtained from Dutch veal calves during a longitudinal study, to better understand the genetic background behind the persistent ESC-R E. coli colonization in the dairy and veal sectors. Rectal swabs were collected from 683 calves located in 13 Dutch dairy farms 1 day prior to their transportation to 8 veal farms. At the veal farms, rectal swabs were collected at 5 different time points after arrival. A total of 1,202 ESC-R E. coli isolates were obtained through selective isolation. Nine out of 13 dairy farms were positive for ESC-R E. coli (n = 175 isolates), arbitrarily divided in a high prevalence (>50%, n = 7) or low pre

SUBMITTER: Bello Gonzalez TDJ 

PROVIDER: S-EPMC12500608 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature