Prioritisation of PrEP among other intervention modalities.
Percent of subnational (top-level administrative) regions in which PrEP (black), early ART (blue), behaviour change communication (green), and voluntary medical male circumcision (orange) are implemented among the general population (plain curves), female sex workers (circles) or men who have sex with men (triangles), over a range of net prevention expenditures for the 15-year intervention period. Female sex workers and men who have sex with men are high-risk groups, while the general population comprises low-risk women and heterosexual men. Voluntary medical male circumcision can be implemented only among uncircumcised men in regions where circumcision coverage is not already high prior to the intervention period (40% of all regions). The x-axis is on a log scale (m=million, b=billion, t=trillion).