ESSENCE

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Using ESSENCE IV

• An Overview

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Objectives

• Explain ESSENCE and its impact
• Define surveillance
• Define syndromic surveillance and its importance
• Demonstrate overview of training CD tool

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What is ESSENCE?

• Electronic Surveillance System for the Early
  Notification of Community-based Epidemics,
  ESSENCE Johns Hopkins University
• Offers excellent slicing and dicing
  capabilities for analysis
• Delivers valuable hospital view of data for
  infection preventionists (IP), others
• Hospital view allows collaboration with public
  health while protecting hospital/patient
  confidentiality

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Surveillance

• Seeks recognition and generates alerts for
• Conditions indicating unusual / unexpected health
  event may be imminent
• Unusual or unexpected number of illnesses or
  syndromes within a period of time or geographic
  area
• Illness or syndromes in an unusual population

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Purpose of Syndromic Surveillance

• Early Event Detection (primary)
• Prevention measures before diagnosis of unusual
  cases
• Facilitates Outbreak Management (secondary)
• Case investigation and management
• Exposure contact tracing
• Exposure source investigation and linking of
  cases and contacts to exposure sources

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Syndromic Surveillance

• This system groups acquired data into sets of
  symptoms that define syndromes and sub-syndromes
  such as
• Respiratory
• Influenza-like illness
• Gastrointestinal
• Neurological
• Based on traditional sources
• Outpatient ICD-9 codes
• Emergency room chief complaints
• Based on non-traditional sources
• School absenteeism
• Over the counter (OTC) sales

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Syndromic surveillance via limited data set

• HIPAA-compliant gathered in software-neutral
  manner
• Limited data set
• Algorithms run on data automatically seeking
  anomalies
• Historical hospital data is baseline for analysis
• Users drill down to investigate

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Using ESSENCE IV
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Who are the Target Candidates?

• Support for multiple audiences
• Epidemiologists
• Infection Preventionists
• Clinicians

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Demonstration CD Layout
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Layer Selection
Map
Legend
Active Layer Description
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Scenario

• You are an Infection Preventionist
• Baylor Medical Center at Southwest Fort Worth
• routine check of alerts in your hospital

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Scenario

• You are an epidemiologist
• Receive call from infection preventionist (IP) at
  HCA North Hills Hospital
• High patient count with diarrhea and fever
• Lab tests reveal shigella
• Lets investigate using ESSENCE

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RESOURCES
Description of APC Credits Disclaimer
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ESSENCE provides the necessary tools
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Helpful Resources

• Useful Websites and pages
• APC main page www.naccho.org/topics/emergency/APC
  /index.cfm
• Tarrant County www.tarrantcounty.com/eHealth/site
  /default.asp
• Texas APC (NACCHO) www.naccho.org/topics/demonstr
  ation/APC/TX.cfm
• Texas APC www.texasapc.net

Use the NACCHO link to request copies of Texas
APC products. Use the contact us page at
www.texasapc.net to reach session presenters, who
can also provide more complete product demos upon
request.
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Questions?
For more information, visit http//www.texasapc.n
et