Fig. 1
From: Investigating zero transmission of HIV in the MSM population: a UK modelling case study
Zero transmission model structure. CD4 counts are in cells/µL. Individuals may transition between health states in the directions of the arrows; transition probabilities are calculated from model inputs. Individuals in all health states have a risk of death; this risk is modified by the average age of the population in question (MSM or MSMLWH) and their disease state. MSM: men who have sex with men; MSMLWH: men who have sex with men living with HIV; PrEP: pre-exposure prophylaxis