Dr. Hagan trained as an epidemiologist at the University of Washington and is expert in the infectious disease consequences of illicit drug use. Her work on the etiology, epidemiology and prevention of HCV in substance users has informed harm reduction practices in the US and abroad. Dr. Hagan served on the Institute of Medicine Committee on the Prevention and Control of Viral Hepatitis in the United States. She is Director of the Transdisciplinary Research Methods Core in the Center for Drug Use and HIV Research within NYU College of Nursing.

 Epidemiology, infectious diseases, viral hepatitis, HIV, substance abuse, research methods, health disparities, systematic reviews, meta-analyses, implementation science