Her research involves spatiotemporal analyses of health data for examining the contributions of known risk factors and environmental exposures to the underlying geographic pattern of disease risk. She works extensively with reconstructing historic environmental exposures using GIS and has an extensive knowledge of groundwater modeling and perfluorooctanoic acid (PFOA), a chemical involved in the manufacturing of Teflon. Dr. Vieira has been an investigator with the Boston University Superfund Research Program for 15 years where she investigates spatial and chemical/non-chemical patterns of ADHD-related behaviors and risky behaviors among children living the New Bedford Harbor Superfund site using generalized additive models (MapGAM). Her work also includes international collaborations with researchers in France, Sweden, Portugal, Denmark, and Italy.