Narasin used as a feed additive in conventional rearing of broilers can co-select for vancomycin-resistant Enterococcus faecium through the NarAB ionophore resistance mechanisms. (academic.oup.com)

Authors: Frederiksen RF … Simm R Journal: Journal of Antimicrobial Chemotherapy Published: 2026-08-04 DOI: https://doi.org/10.1093/jac/dkag253