Resum
In Perú, men who have sex with men (MSM) and transgender women (TW) suffer rates of HIV 50
times greater than the general population. MSM or TW sex workers (SWs) are at especially high
risk. Daily oral pre-exposure prophylaxis (PrEP) effectively prevents HIV infection if patients
adhere to a daily or on-demand regimen. Necessary levels of adoption and adherence require
data-driven intervention strategies for these marginalized groups. We conducted qualitative
content analysis of data obtained from focus groups (FGs) with MSM and TW SWs. Both groups
expressed strong skepticism about the motives behind international drug trials, and the safety of
participating in them. Important differences between MSM and TW groups’ beliefs about
trustworthy information as well as community and public institutions also emerged. MSM SWs
were less trusting of information from other MSM SWs, and preferred to receive information
from institutional medical sources, while TGW SWs preferred to receive information from other
TGW SWs. Successful strategies to encourage PrEP uptake and adherence must address the
distrust patients feel towards international and institutional actors by providing patients with
tailored, reliable information from local and community sources that they trust.