For an illness like HIV/AIDS, number cured obviously cannot be a monitored outcome.  Patients in ongoing treatment, however, and cases of HIV detected certainly can.  One measure that Namibia may want to consider is number of new HIV cases detected and put on ongoing therapy, in order to ensure that the adverse selection mentioned above.  In many ways, incentivizing numbers of clients rather than percentages may be a good idea to ensure comprehensive care for HIV-positive citizens.