Men who are eligible and interested in initiating PrEP can return for a PrEP initiation visit, which will include rapid HIV testing, at two time points: 1 month after enrollment and 4 months after enrollment. Men who initiate PrEP will have additional clinic visits for creatinine, AST/ALT, phosphate, protein and glucose level testing and rapid HIV testing the month following PrEP initiation (month 2 for those initiating PrEP at 1 month and month 5 for those initiating PrEP at 4 months) and every 3 months thereafter. If a participant on PrEP tests positive for HIV, they will discontinue PrEP but continue to be followed for their remaining study visits.