Dr. Alissa Davis is an Assistant Professor at the Columbia University School of Social Work. Her research focuses on the development of interventions to improve linkage to and retention in care for HIV/STI and substance use services for marginalized populations, including racial/ethnic and sexual minorities, individuals involved with the criminal justice system, and people who inject drugs (PWID). Her research integrates both quantitative and qualitative methods. She has worked both domestically and internationally in Eastern Europe and Central Asia and China. Her work has been supported by the National Institute of Drug Abuse, the National Institute of Mental Health, the Fogarty International Center, and the Mellon Foundation. Her current research focuses on developing and adapting a couples-based intervention to improve antiretroviral therapy adherence among people who inject drugs in Kazakhstan and examining factors associated with recurrent bacterial vaginosis infection among women in New York City.