Toward Visualization of the H1N1 / Swine Flu , found very interesting mash-up project Swine-Flu-Map-Animation , using web2.0 technologies , to visualize and track H1N1 Cases in USA .

Swine Flu Map Animated - H1N1 Cases in the United States
Technologies used : Google Charts API ,
Data Source : CDC Swine Flu Data .
Its quite an old project , and the developer announce its no longer updated after May 14 , 2009 . but its good idea and simple .