Relationship between rifampicin resistance and RpoB substitutions of Rhodococcus equi strains isolated in France
Objectives: Study of the rifampicin resistance of Rhodococcus equi strains isolated from French horses over a 20-year period.Methods: Rifampicin susceptibility was tested by disk diffusion (DD) and broth macrodilution methods, and rpoB gene sequencing and MLST were performed on 40 R.equi strains, 50.0% of which were non-susceptible to rifampicin.Re