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HIV Treatment as Prevention: Optimising the Impact of Expanded HIV Treatment Programmes

Figure 2

The transmission potential of individuals as a function of set-point viral load.

(A) Infectiousness (per unit calendar time) and (B) duration of asymptomatic infection are estimated by fitting to various sources of data as described in [24]. (C) The product of these is the transmission potential, the average number of people an infected individual is expected to infect over the whole of asymptomatic infection. The transmission potential measures the relative prevention effect of treatment as prevention targeted to an individual with a given SPVL. Adapted from Fraser et al. [24].

Figure 2