Rifabutin MIC distribution stratified among conventional rifampin-susceptible and rifampin-resistant isolates.

<p>Conventional rifampin susceptible by APM (agar proportion method) critical concentration (MIC≤1.0 μg/ml) and resistance (MIC >1.0 μg/ml). Rifabutin critical concentration = 0.5 μg/ml; susceptible (<0.25 μg/ml), borderline susceptible (0.25–0.5 μg/ml), borderline resistant (1.0–2.0 μg/ml) and resistant (>2.0 μg/ml). Percentages of N within each category of rifampin susceptible and resistant.</p

Demographics and pretreatment characteristics, N = 74.

<p>Demographics and pretreatment characteristics, N = 74.</p