Fig. 3: Isolines for R0 under the trade-off between adherence and coverage rate.
From: A modeling study of pre-exposure prophylaxis to eliminate HIV in Taiwan by 2030

Colors represent R0 values among young, high-risk men who have sex with men (MSM). Red indicates R0 > 1, with darker shades representing higher values, while green indicates R0 < 1, with darker shades representing lower values.