There is exists a Google Map showing global cases of H1N1, I am not a fan of the map (as it is difficult to both visualize density or distribution on a Google pin-point map). Hopefully swine flu won't spread much further but if it does, a nice official choropleth map of global distribution of swine flu might be a good option.
I recommend one turn to the U.S. Centers for Disease Control and Prevention swine flu site for a geographic distribution cases by state. It is also worthwhile, if you're a Twitter fan, to follow the CDC on Twitter. For the global view, read the latest updates on the World Health Organization website (look under "Situation Updates").
For news and information, NPR's Flu Shots blog is a great source. The study of the geographic distribution of diseases is part of the sub-discipline of geography known as medical geography. What are your favorite sources for updated information?