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Promoting Health and Preventing Disease

Improving population health requires a strong focus on preventing disease and strategic decision-making.

The Prevention Policy Modeling Lab (PPML) evaluates the health impact, costs, and cost-effectiveness of infectious disease treatment and prevention programs in the United States. We work closely with collaborators in the National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention (NCHHSTP) at the Centers for Disease Control and Prevention to inform U.S. health policy and guide public health decision-making at national, state, and local levels. The models we build incorporate evidence-based prevention strategies, emphasize cross-cutting initiatives and produce results that can be operationalized within healthcare and other sectors.


Our Work

PPML is dedicated to creating models that improve public health decision-making in five key areas: HIV, viral hepatitis, sexually transmitted infections, tuberculosis, and school/adolescent health.

Buildings and trees on Stanford Campus

Visualizing Outcomes

The PPML suite of interactive web tools promotes the translation of results from modeling studies into health policy.


PPML members have been actively engaged in modeling to inform the COVID-19 response.