Exposure Data (Human Biomonitoring)
Exposure tracking is the monitoring of individuals, communities, or populations for the presence of an environmental agent or its metabolite (products that a chemical breaks down into). Biomonitoring is measuring the amount of contaminants, chemicals, or metabolites found in people, usually by testing their blood or urine. Other types of exposure data used in environmental public health tracking may include estimates of population exposures derived from sophisticated modeling of hazard data, for example, modeling of ozone exposure by the Environmental Protection Agency (EPA) and the National Oceanic and Atmospheric Administration (NOAA) that utilizes air monitoring data and meteorologic information.
Both tracking and biomonitoring can be used to identify populations that are most likely to be exposed to environmental hazards, to track changes in exposure over time, and to help target programs and interventions to those who need it most. Nationally, the Centers for Disease Control and Prevention (CDC) reports on blood and urine levels of 116 chemicals or their metabolites taken from a representative sample of the US population as a whole. However, there is currently little ongoing biomonitoring data collection that is applicable to an environmental health tracking system at the state or community level.
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