Antimicrobial resistance monitoring in commensal and clinical Escherichia coli from broiler chickens: differences and similarities

This study aims to investigate the association between the outcomes of monitoring non-wildtype susceptibility (using epidemiological cut-off values, ECOFF, as prescribed by EU legislation) in commensal E. coli isolated from healthy broilers (i.e. active surveillance) with the outcomes of monitoring clinical resistance (using clinical breakpoints, to determine susceptibility for antibiotic treatment in veterinary practice) in E. coli isolated from diseased broilers (i.e. passive surveillance).

This study shows the value of both an active and a passive surveillance component for AMR monitoring.