USAToday reports a new vaginal ring study has commenced in Africa. The study will evaluate the effectiveness of an HIV preventing vaginal ring that releases DAPIVIRINE. To evaluate the ring certain women will be provided with a working ring, while others will be provided with one that does not contain DAPIVIRINE. Will this lead risky behavior and inconclusive results in women using the later? How will they ever know ? Could their ultimate infection have been avoided altogether by not participating?