The swine flu virus is a serious disease because it is a new strain that has just been discovered, but is curable if treated early (So to insist that if you have any symptom of this disease should be no doubt go to the doctor for diagnosis and assessment).
The vaccine that exists today to combat seasonal influenza has no effect on swine flu; reasons: it is a new virus with genomes completely different from seasonal influenza. In more complex terms we have is the vaccine for the virus and the vaccine H5.N1 we need to fight the new virus is to H1.N1