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The Positively Quit Trial for Smoking Cessation

The main goal of the present study is to determine if a smoking cessation program designed for people living with certain chronic conditions and delivered via videoconferencing groups works better than a control condition--a program that is not designed to help with smoking but that does have the same number …

An Avatar-based Mobile Phone Intervention to Promote Health in African American MSM

The investigators propose to determine the efficacy of "My Personal Health Guide," a theory-based innovative talking relational human Avatar mobile phone application to engage HIV-positive AAMSM in adherence and retention in care. Providing an empathetic talking Avatar source of HIV-related information, motivation, and behavioral skills that is as private and …

The Effect of Inflammation and Damage to Lymph Node Structures on Durable Protective Immunity Following Vaccination

Hypothesis: Infections other than HIV can cause LN inflammation and collagen damage to the fibroblastic reticular cell network (FRCn), which will lead to CD4 T cell depletion and impaired vaccine responses.