As noted previously, it is the economically active sectors of the population who are infected and dying. In the graph above the pale blue represents the distribution of deaths by age group that would have occurred in the absence of an HIV/AIDS pandemic. In 1995 (in yellow) AIDS mortality becomes noticeable, escalating dramatically, until 2010 (in red) where AIDS mortality amongst those aged 35-39 years is nearly 8 times what it would have been in the absence of HIV/AIDS. AIDS mortality will peak 5 to 8 years after HIV prevalence peaks because of the incubation period of the virus.