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Displaying results 1 - 8 of 12
  • 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 …
  • Diagnosis Coding Anomalies Resulting in Hemorrhagic Illness Alerts in Veterans Health Administration Outpatient Clinics

    Content Type: Abstract

    The Veterans Health Administration (VHA) operates over 880 outpatient clinics across the nation. The Johns Hopkins Applied Physics Laboratory’s Electronic Surveillance System for the Early Notification of Community-Based Epidemics (ESSENCE) utilizes… read more
    … Epidemics (ESSENCE) utilizes VHA ICD9 coded outpatient visit data for the detection of abnormal patterns of disease … 0.03 HEMORRHAGIC COND NOS 287.9 48 0.07 DROP HEMATOCRIT PRECIP 790.01 71 0.10 HEMOLYTIC UREMIC SYND 283.11 209 0.29 … tools in order to promote more accurate outpatient coding may improve the performance of the HI detection model. …
  • 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 … create the background data, emergency depart- ment (ED) visits were generated for each political unit in the NCR. ED …
  • Analytic disease surveillance methodology based on emulation of experienced human monitors

    Content Type: Abstract

    Recently published studies evaluate statistical alerting methods for disease surveillance based on detection of modeled signals in a data background of either authentic historical data or randomized samples. Differences in regional… read more
    … based on standard data distributions or stylized signals may not alert as desired. Practical algorithm evaluation and adjustment may be possible by judging algorithmperformance according to … based on standard data distributions or stylized signals may not alert as desired. Practical algorithm evaluation and …
  • Enhancing Event Communication in Disease Surveillance: ECC 2.0

    Content Type: Abstract

    Regional disease surveillance systems allow users the ability to view large amounts of population health information and examine automated alerts that suggest increased disease activity. These systems require users to view and… read more
    … This interpretation is valuable information that may benefit other users. In addition to the … This interpretation is valuable information that may benefit other users. In addition to the daily … This interpretation is valuable information that may benefit other users. In addition to the …
  • Defining Clinical Condition Categories for Biosurveillance

    Content Type: Abstract

    The goal of this project is to create a set of clinical condition categories based on explicit criteria for use in biosurveillance programs. The categories will be defined and keywords and ICD-9-CM diagnosis codes for implementation will be proposed.
    … according to local preferences. However, this disparity may also hinder comparison of biosurveillance data from … nationally notifiable infectious diseases; 3) reasons for visit from CDC’s Hurricane Morbidity Report Form for Active …
  • Classification of Emergency Department Syndromic Data for Seasonal Influenza Surveillance

    Content Type: Abstract

    We evaluated several classifications of emergency department (ED) syndromic data to ascertain best syndrome classifications for ILI.
    … for classification of syndromic data for tracking ILI may differ regionally, so previously pub- lished study … and excluded one hospital that did not provide ED chief com- plaints. The weekly number of positive viral cultures … with ED data. We used 6 classifications of ILI ED visit data for this analysis: (1) A chief complaint with …
  • Modeling Disease Surveillance and Assessing its Effectiveness for Detection of Acute Respiratory Outbreaks in Resource-Limited Settings

    Content Type: Abstract

    A U.S. Department of Defense program is underway to assess health surveillance in resource-poor settings and to evaluate the Early Warning Outbreak Reporting System. This program has included several information-gathering trips,… read more
    … uses health and census data collected during the 2006 Lao visit and incorporates features of recently published agent- … Scenarios investigated were derived from the Lao site visit--the gain from adding EWORS capability in strategic …