Why is PrEP less effective in women?
2 minutes to read
10th February 2021
Recent data indicate that PrEP has overtaken condoms as the most common HIV prevention strategy among Australian gay and bisexual men.
With its 99% efficacy rate among these men, PrEP has been a game changer in HIV elimination.
Scientists, however, have struggled to explain why PrEP use by women — who account for more than half of adults living with HIV globally — fails to afford them a similar level of protection.
Several international trials have reported widely divergent efficacy rates ranging from -49% to 75% for daily oral PrEP, and from 0% to 39% for topical