A public health intervention is any effort or policy that attempts to improve mental and physical health on a population level. Public health interventions may be run by a variety of organizations, including governmental health departments and non-governmental organizations (NGOs). Common types of interventions include screening programs,[1] vaccination,[2] food and water supplementation, and health promotion. Common issues that are the subject of public health interventions include obesity,[3] drug, tobacco, and alcohol use,[4] and the spread of infectious disease, e.g. HIV.[5]
A policy may meet the criteria of a public health intervention if it prevents disease on both the individual and community level and has a positive impact on public health.[6]
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