Over the past 10 years, the usefulness of NH's surveillance systems has been demonstrated repeatedly. STEMS detected influenza and school norovirus outbreaks (3), and AHEDD tracked H1N1 and acute respiratory illness during the flu season, detected anthrax exposures during a gastrointestinal anthrax investigation and identified reportable disease occurrences (i.e., Lyme disease) and nonreportable clusters (i.e., carbon monoxide). These narrowly defined chief complaint queries have been found to be more useful than broad-based queries in detecting daily illness and heath risks. Results of individual surveillance systems assessed together validate individual system detections (i.e., increased sales of OTC antiviral medication and increased school ILI absenteeism validate ED flu spikes).