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For rapid reporting, analysis and action, public health agencies need several types of information:

- Reports of health events affecting individuals

- Vital statistics on the entire population

- Information on the health status, risk behaviors, and experiences of populations

- Information on potential exposure to environmental agents

- Information on existing public health programs

- Information useful to public health, but obtained by organizations not directly involved in public health

- Information on the health care system and the impact of the health care system on heatlh