A very powerful tool for tracking this emerging flu emergency is called Flu Tracker. This map and the data behind it were compiled by Dr. Henry Niman, a biomedical researcher in Pittsburgh, Pennsylvania, using technology provided by Rhiza Labs and Google.  The map was compiled using data from official sources, news reports and user-contributions and is incredibly comprehensive.

http://flutracker.rhizalabs.com/

Check it out and bookmark it.  Be aware as it grows in popularity sometimes it is a bit slow….it is a web hit!