Sybil Hosek, PhD, is a Clinical Psychologist/HIV Researcher in the Department of Psychiatry and the Division of Infectious Disease at Stroger Hospital of Cook County, and Associate Professor in the Department of Medicine at Rush University, with over 20 years of experience in the development and implementation of HIV-related research studies and behavioral interventions. Her current research focuses on biomedical primary prevention interventions for adolescents and young adults, including PrEP and microbicides, and the development of behavioral interventions to improve uptake and adherence to these new biomedical strategies. In addition to her independent NIH grants focused on adolescent and young adult MSM and transgender youth in the US, Dr. Hosek has joined the protocol teams of several NIAID-sponsored adolescent/young adult PrEP safety and demonstration studies focused on adolescent girls and young women in sub-Saharan Africa.