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Volume 13, Number 2—February 2007
Research

Code-based Syndromic Surveillance for Influenzalike Illness by International Classification of Diseases, Ninth Revision

Nicola Marsden-Haug*1, Virginia B. Foster*, Philip L. Gould†, Eugene Elbert*2, Hailiang Wang*, and Julie A. Pavlin*3Comments to Author 
Author affiliations: *Walter Reed Army Institute of Research, Silver Spring, Maryland, USA; †Air Force Institute for Operational Health, Brooks City Base, Texas, USA;

Main Article

Table 2

Data showing match of Air Force respiratory virus specimens to ICD-9 coded visits, January 2002–July 2003*

Match dayNo. specimens†
Did not match (removed from study)1,153
Clinic day – 2 = specimen day47
Clinic day – 1 = specimen day125
Exact day match5,267
Clinic day + 1 = specimen day680
Clinic day + 2 = specimen day117
Total7,389

*ICD-9, International Classification of Diseases, Ninth Revision.
†No. specimens obtained by day of matching visit.

Main Article

1Current affiliation: Tacoma–Pierce County Health Department, Tacoma, Washington, USA

2Current affiliation: US Census Bureau, Suitland, Maryland, USA

3Current affiliation: Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA

Page created: June 29, 2010
Page updated: June 29, 2010
Page reviewed: June 29, 2010
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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