Fig 6. Effective reproduction number and treatment coverage for different annual treatment uptakes and dropout percentages.

(A) The impact of annual treatment uptake, τ*, on the effective reproduction number for a population with the variance in the rate of partner change corresponding to the data. Mixing is proportionate (assortative) for ω = 1 (ω = 0). The curve plotted for τ* = 0.0 is, by definition, R₀. The dashed line indicates the threshold value of R_e = 1 below which HIV is eliminated from the population. R_e decreases with increasing treatment uptake and mixing. (B) Treatment coverage as a function of annual treatment uptake τ* for different dropout percentages ϕ* and the remaining parameters as in A.