FluWatch is “Canada’s national influenza surveillance system.” Their FluWatch Weekly is a summary of influenza activity across the country, and includes a very capable mapping tool that lets you explore flu trends regionally.

Here’s a full year of flu reporting activity in the Maritimes, from May 2007 to April 2008, pulled from their website and sped up significantly (the map loops at the end back to where it started):

A Year of the Flu on PEI

Here’s the same period for all of Canada, sped up even more:

A Year of the Flu in Canada