Liesl Hagan is an epidemiologist with the Centers for Disease Control and Prevention. Her home office is the Division of Viral Hepatitis, where she develops guidance for the prevention and control of hepatitis A, B, and C in correctional settings and provides technical assistance to jurisdictions on hepatitis-related data analysis projects including cost-effectiveness studies and programmatic evaluations. She also co-chairs the CDC National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention Workgroup on Correctional Health. During the COVID-19 pandemic, Liesl has led CDC's COVID-19 Corrections Unit, where she developed guidance tailored to correctional and detention facilities and works with state and local health departments, federal agencies, correctional and detention facilities and other stakeholders on surveillance, data analysis, and outbreak investigations.