Development and Piloting of a Just-in-Time, Personalized HIV Prevention Intervention for Youth Experiencing Homelessness and Unstable Housing

At the completion of each EMA, participants in the intervention group (n=50) will receive messages that address:1) unsafe sexual behaviors, 2) alcohol/drug use, 3) PrEP interest, and 4) HIV testing. In addition, participants will have access to a button in the app that will link them to resources when/if they are the victim of sexual assault. Finally, intervention arm youth will be asked to set a behavioral goal related to HIV prevention during this session. Those goals will include increasing condom use, PrEP use, non-occupational post-exposure prophylaxis (nPEP) use, reducing number of sexual partners, not having sex with using drugs or drinking alcohol, avoiding IV drug use, getting testing for HIV, and testing and treating sexually transmitted infections (STIs) as needed

Participants in the attention control condition (n=50) will answer the same EMA items as the Intervention group. However, the intervention messages will contain content related to nutrition, physical activity, sleep hygiene, and tobacco use. Finally, control arm youth will be asked to set a behavioral goal related to general health during this session.Those goals will include getting 7+ hours of sleep, eating \>= 5 servings of fruits or vegetables, not using tobacco products, exercising at least 60 minutes.