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

2016-04-12 16:50:55.840194+00:00

Modified

2016-05-23 21:29:16.762685+00:00

Details

Publisher

Morbidity and mortality weekly report (MMWR)

Volume

53

Number

Suppl.

Pages

159-165

Document role

Informational Material

Access

Language

English

URL http://www.cdc.gov/mmwr/preview/mmwrhtml/su5301a30.htm
Accessed

2016-04-12

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.