Uncertainty Statements in Estimates and Projections of the HIV/AIDS Epidemic. Left: Estimates of global number of new HIV infections, 2001–2012, with uncertainty bounds, from UNAIDS’ main annual public statement. Source: [40]. Right: Estimates and projections of HIV prevalence in Gabon, 1970–2015, based on antenatal clinic data up to 2009; the bands for 2010–2015 summarize probabilistic projections. The results are shown for two different models, EPP and R-ex, and the observed prevalence at individual clinics is shown by unfilled circles. Source: [41].