Identification

Author

Lombardo JS, Burkom H, Pavlin J

Title

ESSENCE II and the framework for evaluating syndromic surveillance systems

Year

2004

Publication type

Article

Created

2012-05-30 15:27:43+00:00

Modified

2016-07-25 15:23:05.309776+00:00

Details

Publisher

MMWR

Volume

53

Pages

159-165

Access

Language

English

URL http://www.ncbi.nlm.nih.gov/pubmed/15714646
Accessed

2016-04-28

Extended information

Abstract

INTRODUCTION:
The Electronic Surveillance System for the Early Notification of Community-Based Epidemics (ESSENCE II) is a prototype syndromic surveillance system for capturing and analyzing public health indicators for early detection of disease outbreaks.
OBJECTIVES:
This paper presents a preliminary evaluation of ESSENCE II according to a CDC framework for evaluating syndromic surveillance systems.
METHODS:
Each major topic of the framework is addressed in this assessment of ESSENCE II performance.
RESULTS:
ESSENCE captures data in multiple formats, parses text strings into syndrome groupings, and applies multiple temporal and spatio-temporal outbreak-detection algorithms. During a recent DARPA evaluation exercise, ESSENCE algorithms detected a set of health events with a median delay of 1 day after the earliest possible detection opportunity.
CONCLUSIONS:
ESSENCE II has provided excellent performance with respect to the framework and has proven to be a useful and cost-effective approach for providing early detection of health events.