Optimizing CAB-LA as PrEP for Women Who Inject Drugs

The goal of this study is to elicit information crucial for designing strategies to support engagement in cabotegravir, a long-acting injectable form of pre-exposure prophylaxis (PrEP) to reduce HIV risk among women who inject drugs (WWID), a population with high unmet need that has been understudied in all phases of PrEP research. The main questions this study aims to answer are: 1. How do WWID perceive long-acting injectable cabotegravir (CAB-LA) as a HIV prevention tool? 2. If and how their decisions to initiate CAB-LA as PrEP are informed by their experiences with other long-acting medications, experience with daily oral medications, and their personal circumstance (e.g., like housing or addition severity)? 3. Do PrEP outcomes (e.g., adherence) and engagement in care over time differ between WWID prescribed CAB-LA versus daily oral PrEP? The sample for this study will be derived from and ongoing prospective trial of "TIARAS," a multi-component behavioral intervention designed to reduce HIV acquisition risk among women who inject drugs (see NCT05192434).