To stifle the spread of swine flu in the bud is only one solution. We have to attack the evil at its root. Therefore you have to prevent that the spread fan out among pigs. Once an animal gets sick you have to give him the antidote immediately. For this you only need to click on the sick pig. If more than three pigs die you loose and the disease will take over humanity.

Click on the infected pigs to give them the antidote.