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  • Syndromic Surveillance for Influenza in Washington State: A Local and Regional Perspective

    Content Type: Abstract

    We explored the utility of tracking emergency department (ED) visits for febrile illness as a proxy for influenza surveillance, from both a local and a regional perspective.
    … was lowest compared with King and Pierce counties and did not correlate as strongly with data from these two … the 5-17 year old age group (r=.84); the correlation for all other age groups was less than .65. CONCLUSIONS ED fever … activity, including laboratory influenza test results and all cause school absenteeism. ED fever visit trends for …
  • Monitoring Influenza Activity Using the BioSense System, 2003-2005

    Content Type: Abstract

    One of the standard approaches to public health surveillance for influenza is to monitor the percent of visits to about 2000 sentinel physicians for influenza-like illness (%ILI; fever plus cough or sore throat). The BioSense System currently… read more
    … an independent predictor. Principal components analysis did not identify any combinations of ICD-9 codes that were better predictors of %ILI. Analyses of lagged data did not show stronger correlations, indicating that seasonal …