Peer-Led Sexual Health Is Getting Teens to Use HIV Prevention

Young people in rural South Africa started HIV prevention at far higher rates when the pitch came from a peer instead of a clinic queue, according to new research from University College London. Two major trials found that peer-led sexual health services moved the needle on PrEP uptake, contraception use, and staying in care, and the researchers presented the results this month as late-breakers at the IUSTI World Congress in Prague.

The work matters because teenagers and young adults remain among the hardest groups to reach with HIV prevention. Standard clinic-based care asks young people to walk into a primary care facility, wait, and ask for PrEP by name. That model has never fit the lives of people aged fifteen to thirty, and the new data suggests the fix is not better clinic advertising but a different messenger entirely, which is what peer-led sexual health outreach provides.

Thetha Nami: peers beat the clinic queue

Led by Professor Maryam Shahmanesh of the UCL Institute for Global Health, in collaboration with the Africa Health Research Institute, the Thetha Nami trial tested trained peer navigators who met young people where they were and linked them into mobile, community-based sexual health services. Compared with standard primary care, peer-led mobilisation raised uptake of risk-informed HIV prevention by eighty-four percent. Contraception use and PrEP uptake climbed as well.

A single finding kept the celebration modest. The trial did not reduce the overall prevalence of transmissible HIV, and the researchers said the reason was no mystery: young people struggled to keep taking oral PrEP every day, and viral suppression stayed low among young people living with HIV. A program can only be as good as the pills people actually keep taking, which is the case for peer-led sexual health services that offer choices rather than just referrals.

LAPIS: choice beat the daily pill

The second trial, LAPIS, answered that problem with choice. Peer navigators offered young people their pick of prevention options, including daily oral PrEP and cabotegravir, a long-acting injectable. Compared with peer-led delivery of oral PrEP alone, the choice model more than doubled the odds of starting PrEP or post-exposure prophylaxis (PEP), and increased the odds of staying in care by roughly a third.

The injectable was the clear favorite. Almost sixty-six percent of participants chose the long-acting shot over the daily pill when both were on the table. That detail tracks with a broader shift in HIV prevention toward options that do not depend on remembering a pill every morning, according to our earlier reporting on the twice-yearly HIV prevention shot now reaching patients (The Twice-Yearly HIV Prevention Shot No One Knows About). The LAPIS results make the argument for peer-led sexual health programs that put the menu in young people's hands.

Why it matters for Gen Z

The trials ran in rural South Africa, but the lesson travels. Peer-led sexual health approaches work because embarrassment is a real barrier: asking a stranger about condoms, STI tests, or PrEP is hard at any age, and it is harder as a teenager when the nurse might know your family. A peer navigator removes the audience.

The background data from the trial team shows how wide the gap was. Among young women who first showed up at the mobile clinics, more than half were not using any contraception, according to a paper the team published describing the rollout. Peer-led sexual health services closed part of that gap simply by showing up first, with testing, condoms, and contraception in hand.

The findings also land at an awkward moment. According to UCL, some health systems are moving away from community-based delivery models just as this evidence shows those models reaching the people clinics miss. If the goal is getting prevention into young people's hands, the evidence now favors funding peer-led sexual health outreach over another clinic poster.

Related reading, according to our earlier reporting: the over-the-counter birth control pill is reaching uninsured and rural people who struggled to get contraception through clinics (Birth Control Without a Prescription Reaches People Clinics Miss), and doxy-PEP, the antibiotic taken after sex, has cut syphilis and chlamydia diagnoses in Australia (The STI Morning-After Pill Works. Doxy-PEP Has a Catch).