Displaying results 593 - 600 of 618
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Evaluating Pandemic Influenza Surveillance and Response Systems in Developing Countries: Framework and Pilot Application
Content Type: Abstract
A pandemic caused by influenza A/H5N1 or another novel strain could kill millions of people and devastate economies worldwide. Recent computer simulations suggest that an emerging influenza pandemic might be contained in Southeast Asia through rapid… read more… questionnaires provided to system operators and site visits. We will develop recommen- dations for system … -
Linking Public Health and Healthcare Data for Syndromic Surveillance
Content Type: Abstract
A number of syndromic surveillance systems include tools that quickly identify potentially large disease outbreak events. However, the high falsepositive rate continues to be a problem in all of these systems. Our earlier work… read more… in the patient encounter dataset, same day office visits corresponded well with the flu epidemic curve. … -
Systematic Comparison of Algorithms Used in Syndromic Surveillance
Content Type: Abstract
Varied approaches have been used by syndromic surveillance systems for aberration detection. However, the performance of these methods has been evaluated only across a small range of epidemic characteristics. Objective… read more… syndromes having average daily counts of 2, 10, 35 and 50 visits per day. We then simulated epidemics by creating all … -
GraphScan: Detection and Analysis of Free-Form Spatio-Temporal Patterns
Content Type: Abstract
By capturing the spatio-temporal organization of the data using a graph, GraphScan avoids the challenges associated with trying to “fit” incoming data into moving windows of predefined shapes and sizes. Whereas the popular space-time permutation… read more… to the level of “activity” (e.g., count of GI-related ED visits) for the corresponding region and time period. … -
ICD-9 CM Based Sub-Syndrome Distributions in BioSense Hospital Data
Content Type: Abstract
Objective To examine sub-syndrome distributions among BioSense emergency department (ED) chief complaint and final diagnosis based data and to observe patterns by hospital system, age, and gender.… frequent ICD-9 CM based sub- syndromes. The proportion of visits contributing to the 20 most common ED chief complaint … -
Chart Review of Laboratory-Confirmed Salmonella Enteritidis Cases in a Local Food Borne Outbreak Linked to Mung Bean Sprouts
Content Type: Abstract
A retrospective chart review was performed to examine chief complaint, syndrome classification and discharge diagnoses of laboratory confirmed Salmonella Enteritidis phage type (PT) 13 cases who visited the Emergency Departments (ED) of two local… read more… Division. The RODS-based system captures real-time ED visits from 7 area hospitals and real-time admissions from 3 … -
Reverse Engineering of a Syndrome Definition for Influenza
Content Type: Abstract
We report here on the use of the North Carolina Bioterrorism and Emerging Infection Prevention System (NC BEIPS, www.ncbeips.org) to reverse engineer a syndrome definition of influenza for the purpose of influenza surveillance.… with a goal of increasing sensitivity. METHODS Patient visits from the 2003-2004 influenza season (9/28/03-3/27/04) … -
A Nonparametric Scan Statistic for Multivariate Disease Surveillance
Content Type: Abstract
We present a new method for multivariate outbreak detection, the ìnonparametric scan statisticî (NPSS). NPSS enables fast and accurate detection of emerging space-time clusters using multiple disparate data streams, including nontraditional data… read more… into five Allegheny County datasets: respiratory ED visits, three streams of OTC data (cough/cold, antifever, …