Katriona Shea


Professor of Biology and Alumni Professor in the Biological Sciences,
Faculty member in the Center for Infectious Disease Dynamics


  • Health & Medicine
  • Sustainability & Environment
  • Social Sciences

Focus Areas:

  • Global Health
  • Infectious Disease
  • Ecology
  • Population Research
  • Biology
  • Climate Change


  • Katriona Shea is available to comment on a variety of topics related to the COVID-19 pandemic, including population-level trends in COVID-19 cases, hospitalizations and deaths.
  • Shea can speak about how epidemiologists handle uncertainty related to outbreak outcomes.
  • She can discuss the use of strategic COVID-19 testing as a tool for minimizing economically damaging shutdowns.

Katriona Shea’s research focuses on modeling infectious diseases with a current emphasis on the COVID-19 pandemic. A member of Penn State’s Center for Infectious Disease Dynamics, she works closely with the Centers for Disease Control and Prevention and an international team of collaborators to forecast COVID-19 cases, hospitalizations and deaths under various intervention scenarios. She also uses models to examine how strategic testing may prevent the need for future lockdowns. She is a world expert on the practice of combining multiple models to reduce uncertainty and achieve more accurate projections.

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