Figure 5.
Effectiveness of prophylactic vaccination. Number of vaccinations needed to avert one infection (A) at different time points, and in 2050 (B) by prioritizing different age groups for vaccination, (C) by prioritizing different sexual risk groups, and (D) by prioritizing women as opposed to men. The prophylactic vaccine is introduced in 2020, with its coverage scaled up to 80% by 2030, and maintained at this level thereafter. Duration of vaccine-induced protection is 20 years and VES is 50%.