My research is focused on the health economics and epidemiology of blood supply and transfusion medicine interventions throughout the world. My work encompasses risk factor assessment for infections in blood donors, adverse reactions in donors, blood utilization, and cost-effectiveness of blood safety interventions. I lead the cost-utility analysis subgroup of the International Society for Blood Transfusion working party on transfused transmitted infectious diseases, am a co-principal investigator for the UCSF/Blood Centers of the Pacific clinical site of the NHLBI Retroviral Epidemiology Donor Study II (REDS-II), and a co-investigator for REDS-II International component in Brazil.