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Figure 1 | BMC Infectious Diseases

Figure 1

From: Can epidemic detection systems at the hospital level complement regional surveillance networks: Case study with the influenza epidemic?

Figure 1

Graphs of time series between 1st June 2007 and 31st March 2011. Time series for respiratory syndromes detected in the local hospital by UrgIndex and the weekly influenza cases of the different surveillance systems studied. The shaded regions are the reference for the influenza outbreak periods in the Rhône-Alpes region defined in publications of the Cire Rhône-Alpes from regional Sentinel network data. Solid lines show the period of data excluded for the sensitivity analysis (from 2009-S19 to 2010-S18).

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