Overview Phase 3 Safety and Effectiveness Trial of Dapivirine Vaginal Ring for Prevention of HIV-1 in Women Status: Completed Trial end date: 0000-00-00 Target enrollment: Participant gender: Summary This is a double-blind, randomised, placebo-controlled study to assess the safety and efficacy of a silicone elastomer vaginal matrix ring. Phase: Phase 3 Details Lead Sponsor: International Partnership for Microbicides, Inc.Collaborator: National Institutes of Health (NIH)