Efflux pump-mediated BC resistance was investigated in L. monocytogenes from food.
Among the 59 L. monocytogenes strains, 13 strains were resistant to BC.
None of the qac genes were detected among the tested strains.
The bcrABC cassette encoded by plasmid was harbored by 2 of 13 BC resistant strains.
Plasmid-borne and chromosomal efflux pumps contributed for the BC resistance in L. monocytogenes.