Longitudinal course of TB infection. The waterfall plot depicts the longitudinal change in the relative diseased tissue volume between a baseline and the representative weeks (b 16, c 20, and d 28 weeks after infection) as the log2 fold change (log2 (week change/baseline)) and the correlation with treatment outcomes: no-D (no drugs), HR (isoniazid + rifampicin), HRZ (isoniazid + rifampicin + pyrazinamide), HZ (isoniazid + pyrazinamide). Subjects taking the same antibiotic cocktail present a similar response (improvement or worsening) with respect to the baseline.