Development of a Multilevel HIV Prevention Intervention for the Emergency Department

The goal of this clinical trial is to pilot test a psychosocial-behavioral mobile health (mHealth) human immunodeficiency virus (HIV) prevention intervention in people who use drugs presenting to the emergency department (ED). The main question the study aims to answer is: is the intervention acceptable and appropriate? Participants will use the mHealth app while waiting in the ED and also at home for 90 days. Participants will be asked to complete surveys at baseline, before leaving the ED, and at 30-, 60-, and 90-day follow up visits.

Inclusion Criteria: * At least 18 years old * No HIV positive test in electronic medical record or self-reported * Past month HIV risk behavior (condomless sex or needle sharing not protected by adherent PrEP \[pre-exposure prophylaxis\]) * Past month use of illicit drugs (excluding marijuana) * Belong to at least one of key HIV risk group (transgender woman, MSM, Black/Latinx/Indigenous) * Own a smartphone * Able to read and understand English Exclusion Criteria: * Unable to provide informed consent * Medical or psychiatric condition that would interfere with ability to participate in study procedures * Presented to the emergency department (ED) for a psychiatric issue * Expected to be admitted to ED for more than 48 hours