Validation of Syndromic Surveillance for Respiratory Pathogen Activity
Cees van den Wijngaard* , Liselotte van Asten*, Wilfrid van Pelt*, Nico J.D. Nagelkerke†, Robert Verheij‡, Albert J. de Neeling*, Arnold Dekkers*, Marianne A.B. van der Sande*, Hans van Vliet*, and Marion P.G. Koopmans*
Author affiliations: *National Institute for Public Health and the Environment, Bilthoven, the Netherlands; †United Arab Emirates University, Al-Ain, United Arab Emirates; ‡Netherlands Institute of Health Services Research, Utrecht, the Netherlands;
Figure 1. Respiratory syndrome time series and laboratory pathogen counts in the Netherlands. Respiratory syndromes were defined for the 6 registries defined in Table 1: A) absenteeism, B) general practice (GP) consultations, C) pharmacy, D) laboratory submissions, E) hospitalizations, and F) mortality counts. Pathogens plotted were respiratory syncytial virus (RSV), influenza A, influenza B, and Streptococcus pneumoniae [1999–2004 or part of this period, panels A–C]. Recurrent unexplained syndrome elevations in October are circled. Pathogen counts are daily counts of pathogens found in laboratory survellience.
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