Syndromic surveillance refers to the monitoring of disease related events, sets of clinical features (i.e. syndromes), or other indicators in a population. Tennessee obtains emergency department data for syndromic surveillance in standardized HL7 format following the field and value set standards published by the Public Health Information Network. Messages contain information previously unavailable to syndromic surveillance systems, including quantitative values such as recorded temperature.

The Public Health Security and Bioterrorism Preparedness and Response Act of 2002 mandated establishing an integrated national public health surveillance system for early detection and rapid assessment of potential bioterrorism-related illness. In 2003, CDC created and launched the BioSense software program. At that time, CDC’s focus was on rapidly developing and implementing Web-based software to collect hospital emergency department data for analysis to detect and monitor syndromes of public health importance.