You have reached the temporary home of the Maryland Tracking Network, an intergrated environmental and health data resource for Maryland. The Maryland Tracking Network is a project of the Department of Health and Mental Hygiene, the Department of the Environment, and the Centers for Disease Control and Prevention. Users will be able to examine health and environmental data for Maryland in tables, charts, and maps. Visit this page often to see our progress in bringing environmental and public health information closer to you. For more information, visit the national home of environmental public health tracking at the Centers for Disease Control and Prevention (CDC).