Syndromic surveillance: STL for modeling, visualizing, and monitoring disease counts.
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BMC medical informatics and decision making, ISSN: 1472-6947, Vol: 9, Issue: 1, Page: 21
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Public health surveillance is the monitoring of data to detect and quantify unusual health events. Monitoring pre-diagnostic data, such as emergency department (ED) patient chief complaints, enables rapid detection of disease outbreaks. There are many sources of variation in such data; statistical methods need to accurately model them as a basis for timely and accurate disease outbreak methods.