Clinical Clinical depression is one of the highest comorbidities to HIV/AIDS, with estimated rates up to 34.9 percent. Depression, in the context of HIV, leads to poor self-care behavior such as non-adherence to ART and worse retention in care, which are critical for treatment success. Based on our prior work, and given that CBT is an evidenced-based treatment for depression, this is a two-arm effectiveness randomized controlled trial of nurse-delivered cognitive behavioral therapy for depression and adherence integrated into the HIV primary care setting in S. Africa. To ensure that those who need this intervention the most will receive it, participants will be patients with HIV who did not achieve viral suppression from their first line ART, and have a unipolar depressive mood disorder.