Figure 3

Thresholds for discrete active TB case finding campaigns to be highly cost-effective in South Africa, China, and India, by cost per case detected and analytic time horizon. Each solid line shows the incremental cost per DALY averted (y-axis, 1,000 USD units), as a function of the cost per case detected and started on treatment (x-axis). The dashed lines and corresponding numbers below the x-axis show the cost per case detected that corresponds to the “highly cost-effective” threshold in India (orange), China (green), and South Africa (purple). Panels A-C show these relationships for the same intervention, but under different time horizons; Panel A considers only effects that occur in the first 2 years (i.e., ignoring longer-term effects), whereas panels B and C consider costs and effects over 5 and 10 years, respectively.