Degree of heteroresistance at major loci.

Loci whereby at least 5% of isolates had some degree of mutation are shown, as well as known rpoB and eis mutations. The y-axis shows the degree of heteroresistance, with each ‘X’ symbol representing a single isolate. Horizontal lines are median values. Loci are shown on the x axis. In rare instances whereby an isolate had more than one mutation at the same locus, the mutation with the highest degree of heteroresistance is shown.