Figure 2.

Proportional Venn diagram depicting the relationship between herpes simplex 2 (HSV-2), genital ulcer disease (GUD), and penile epithelial trauma (defined as self-reported scratches, cuts, abrasions, or bleeding of the penile skin occurring during or after sex in the past 6 months). Area-proportional Venn diagram showing the relative frequency and overlap of HSV-2 (n = 404), GUD (n = 156), and penile epithelial trauma (n = 1378). Numbers represent unique subjects: overlap represents events occurring within a single subject observed at the same time (simultaneous) or at different time points. Percentages reflect the proportion of the total number of men (N = 1471) with HSV-2, GUD, or penile epithelial trauma.