Overview Safety and Efficacy Trial of a Dapivirine Vaginal Matrix Ring in Healthy HIV-Negative 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: N/A Details Lead Sponsor: International Partnership for Microbicides, Inc.