What is Health Surveillance?
Health surveillance is the ongoing, systematic use of routinely collected health data to guide public health action in a timely fashion. Surveillance systems count health events and health services as they occur. Some of our programs collect information on risk factors related to various diseases, including foods, water supply, and drug use, while other programs measure health behaviors and environmental factors (e.g., air, food, or water quality) independently of any health events associated with them.
