It's really simple.
Americans, we've decided, are so dumb that "we" think to avoid the swine flu, just don't eat pork. (I never eat pork, but that's another story.) To avoid this misconception, the CDC et. al. are attempting to rebrand Swine Flu as H1N1, hoping that will lead to people doing more sensible things to avoid contracting the flu, and skipping the ridiculous pro-avoidance methodology.
Here's how you beat the swine flu (and all flu strains in the future): call it the Dirty Hands Flu.
Feel free to share my idea; just credit Toner Mishap.