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The median CD4 count was 130 cells/mm3 (interquartile range [IQR], 66 to 253 cells/mm3). The rifampicin geometric mean area under the concentration-time curve from 0 to 24 h (AUC0-24) values were 42.9 μg · h/ml (95% confidence interval [CI], 24.5 to 75.0 μg · h/ml) for the standard dose, 295.2 μg · h/ml (95% CI, 189.9 to 458.8 μg · h/ml) for the high oral dose, and 206.5 μg · h/ml (95% CI, 154.6 to 275.8 μg · h/ml) for intravenous administration. The rifampicin AUC0-24 GMR was 1.44 (90% CI, 0.84 to 2.21) and the maximal concentration o