Andrea Cox is currently an Associate Professor at the Johns Hopkins School of Medicine with appointments in the Departments of Medicine and Oncology and in the Immunology Program. She earned her Ph.D. in 1994 at The University of Virginia, where she worked on characterization of peptide T cell antigens. She subsequently completed an M.D. and Internal Medicine and Infectious Disease training at Johns Hopkins. She has been on the Hopkins faculty since 2003. Clinically, she specializes in the treatment of patients with hepatitis virus infections. Her laboratory investigates human immune responses to chronic viral infections. She is principally interested in mechanisms through which these infections stimulate and evade immune responses, vaccine development, and immunotherapy. Dr. Cox has managed a longitudinal cohort of injection drug users since 2003 to permit detailed molecular analysis of HCV transmission, host immune responses, and virus sequence evolution. She is also the principal investigator on the first prophylactic HCV vaccine trial in at risk people.