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Figure 2 | BMC Public Health

Figure 2

From: Validity and timeliness of syndromic influenza surveillance during the autumn/winter wave of A (H1N1) influenza 2009: results of emergency medical dispatch, ambulance and emergency department data from three European regions

Figure 2

Time series of Belgian syndromic surveillance and reference data and documentation of Poisson CUSUM signals, week 36 (30.8.) to 52 (31.12.) in 2009. a) EP-BE: Emergency Physician Service (ambulances), Belgium. b) ED-BE: Emergency department, University Hospital Leuven, Flemish Brabant, Belgium.

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BMC Public Health

ISSN: 1471-2458

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