She holds a secondary appointment in the Division of Infectious Diseases at Brown University Medical School. She is also the Executive Director of the Rhode Island Public Health Institute (RIPHI). Dr. Nunn conducts applied research on how to reduce racial and ethnic disparities in HIV infection, treatment and care. With colleagues, she oversees two pre-exposure prophylaxis (PrEP) implementation science programs in Providence, Rhode and Jackson, Mississippi. She also conducts HIV and Hepatitis C (HCV) prevention research about how to best link people living with HCV and HIV care services.