Displaying results 1 - 6 of 6
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Increase in Pneumonia Cases as an Early Indicator of Severe and Pandemic Influenza Outbreak
Content Type: Abstract
Objective To enable the early detection of pandemic influenza, we have designed a system to differentiate between severe and mild influenza outbreaks. Historic information about previous pandemics suggested the evaluation of two… read more… and can be diagnosed immediately in a physician office visit, while a confirmed influenza diagnosis requires a … and can be diagnosed immediately in a physician office visit, while a confirmed influenza diagnosis requires a … outpatient office and hospital emergency room (ER) visits in selected counties in Virginia and Maryland, and … -
The Development of Virtual Data for Syndromic Surveillance Exercises
Content Type: Abstract
On 27 April 2005, a simulated bioterrorist event—the aerosolized release of Francisella tularensis in the men’s room of luxury box seats at a sports stadium—was used to exercise the disease surveillance capability of the National Capital Region (NCR… read more… requirements and represented both ‘normal’ endemic visits (the background) as well as outbreak-specific records … requirements and represented both ‘normal’ endemic visits (the background) as well as outbreak-specific records … scenario realism. RESULTS A total of 2,623,226 background visit records were generated for the exercise. The … -
Preparing Biosurveillance Data for Classic Monitoring
Content Type: Abstract
Modern surveillance systems use statistical process control (SPC) charts such as Cumulative Sum and Exponentially Weighted Moving Average charts for monitoring daily counts of such quantities as ICD-9 codes from ED visits,… read more… daily counts of such quantities as ICD-9 codes from ED visits, sales of medications, and doctors’ office visits. The working assumption is that such pre-clinical … daily counts of such quantities as ICD-9 codes from ED visits, sales of medications, and doctors’ office visits. … -
Development and Evaluation of a Data-adaptive Algorithm for Univariate Temporal Biosurveillance Data
Content Type: Abstract
Numerous recent papers have evaluated algorithms for biosurveillance anomaly detection. Common essential problems in the disparate, evolving data environment include trends, day-of-week effects, and other systematic behavior.… read more… of authentic outpatient data covering 1402 days of clinic visit counts. Receiver operating characteristic curves were … 2. Brillman JC, et.al. Modeling emergency department visit patterns for infectious disease complaints: results … -
Implementation and Comparison of Preprocessing Methods for Biosurveillance Data
Content Type: Abstract
Modern biosurveillance relies on multiple sources of both prediagnostic and diagnostic data, updated daily, to discover disease outbreaks. Intrinsic to this effort are two assumptions: (1) the data being analyzed contain early indicators… read more… data. Examples are daily counts of emergency room visits, over-the-counter (OTC) or prescription medication sales, school absences, doctors’ office visits, veterinary reports, or other data streams that could … E, Picard R, Umland E: Modeling emergency department visit patterns for infectious dis- ease complaints: results … -
Hybrid Probabilistic Modeling and Automated Data Fusion for Biosurveillance Applications
Content Type: Abstract
The increased threat of bioterrorism and naturally occurring diseases, such as pandemic influenza, continually forces public health authorities to review methods for evaluating data and reports. The objective of bio-surveillance is to automatically… read more… chief complaints, ICD-9 diagnosis codes, physician office visits, and pharmacy data. In addition, information such as …