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Figure 3 | BMC Public Health

Figure 3

From: Potential for early warning of viral influenza activity in the community by monitoring clinical diagnoses of influenza in hospital emergency departments

Figure 3

Cross-correlation of daily counts of Emergency Department visits with a provisional diagnosis of influenza against daily counts of positive laboratory test results for influenza viruses after removal of trend and seasonality for the five-year period 2001 to 2005. Dashed horizontal lines are 95% confidence limits.

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BMC Public Health

ISSN: 1471-2458

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