^ You are right about the stall game.
If you can eliminate all the human infections and cull all the piggies that have the virus, you can eliminate the outbreak. The virus won't go away completely, but you can get rid of this strain that is transmissible person-to-person (hopefully). It won't take 6 months to get rid of this strain of swine flu, and they will mix in this swine flu strain into next year's batch of flu vaccine (if it can be done).
What people are really worried about is if a pig (or now, a human) catches this form of swine influenza at the same time as H5N1 bird influenza.