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Related Experiment Videos

ESSENCE II and the framework for evaluating syndromic surveillance systems.

Joseph S Lombardo1, H Burkom, J Pavlin

  • 1Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Rd, Laurel, MD 20723, USA. Joe.Lombardo@jhuapl.edu

MMWR Supplements
|February 18, 2005
PubMed
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The Electronic Surveillance System for the Early Notification of Community-Based Epidemics (ESSENCE II) effectively detects health events early. This syndromic surveillance system demonstrates a useful and cost-effective approach for public health surveillance.

Area of Science:

  • Public Health
  • Epidemiology
  • Health Informatics

Background:

  • The Electronic Surveillance System for the Early Notification of Community-Based Epidemics (ESSENCE II) is a prototype system.
  • It is designed for capturing and analyzing public health indicators.
  • ESSENCE II aims for the early detection of disease outbreaks.

Purpose of the Study:

  • To present a preliminary evaluation of the ESSENCE II system.
  • The evaluation follows a framework established by the Centers for Disease Control and Prevention (CDC).
  • This assessment focuses on the performance of ESSENCE II.

Main Methods:

  • The evaluation addresses each major topic within the CDC framework.
  • ESSENCE II captures data in various formats.

Related Experiment Videos

  • It parses text strings into syndrome groupings and applies temporal and spatio-temporal outbreak-detection algorithms.

    • Main Results:

    • ESSENCE II algorithms detected health events with a median delay of 1 day.
    • This detection occurred after the earliest possible detection opportunity during a DARPA evaluation.
    • The system demonstrated effective data parsing and algorithm application.

    Conclusions:

    • ESSENCE II demonstrated excellent performance against the CDC evaluation framework.
    • The system is a useful and cost-effective method for early health event detection.
    • ESSENCE II proves valuable for public health surveillance.