Malawi researchers in vaginal ring study to prevent HIV infection

Malawi researchers are currently into an MTN 020 (ASPIRE), a
microbicide study to determine whether a woman's use of a vaginal ring
containing the antiretroviral (ARV) drug dapivirine, which is not
currently used for treatment, is a safe and effective method for
protecting against HIV infection in women when inserted in the vagina
once every 4 weeks.