MTN-023/IPM 030 is a Phase 2a, two-arm, placebo-controlled, double-blinded, multi-site, randomized trial of dapivirine vaginal ring (VR) versus placebo VR. The clinical trial is designed to assess the safety of dapivirine (25 mg) administered via a silicone vaginal ring (primary objective) and evaluate the acceptability of the dapivirine or placebo VR in sexually experienced, HIV-uninfected adolescent females, when inserted once every 4 weeks during 12 weeks of study product use.