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CGD Policy Blogs


How Plausible Are the Predictions of AIDS Models?

UNAIDS, WHO, PEPFAR and the Global Fund for AIDS TB and Malaria (GFATM) all depend on long-run projections in order to make the case for increased attention and financing for AIDS.  This dependency is a response to the reality that HIV is a slow epidemic with extraordinary “momentum”.  Even small changes in the course of new infections require years to implement and have health and fiscal consequences for decades thereafter.  According to the UNAIDS web site, “[s]ince 2001, the UNAIDS Secretariat have le