a) Weekly number of influenza positive tests and influenza admissions to hospital for the Ontario, 2010/11 season. b) Corresponding cumulative distribution functions (CDF).

<p>In this example, influenza admissions peaked in the last week of 2010 and first week of 2011, a time when resource planning can be more critical. The alert set based on laboratory data for the week of Nov 21 and available operationally the week of Dec 5, would have provided a 3 week notice of peak influenza activity.