Antimicrobial resistance in commensal from humans and chickens in the Mekong Delta of Vietnam is driven by antimicrobial usage and potential cross-species transmission.

Objectives: To investigate phenotypic antimicrobial resistance (AMR) in relation to antimicrobial use (AMU) and potential inter-species transmission among from humans and chickens located in the same households in the Mekong Delta of Vietnam.

Methods: We collected data on AMU and faecal swabs from humans (= 426) and chickens (= 237) from 237 small-scale farms. From each sample, one strain was isolated and tested for its susceptibility against 11 antimicrobials by Sensititre AST.