Ccuracy or low sensitivity for HSV-2 recurrences, and we were not able to use HSV PCR to confirm that ulcers were herpetic. Finally, AEs only captured ulcers that increased in severity or frequency; thus, the reduction in ulcers associated with FTC/TDF may have been greater than what we observed.Daily Oral FTC/TDF PrEP and HSV-2 among MSMFigure 2. Probability of testing HSV-2 seronegative by rando