Swine flu is a respiratory disease of pigs caused by type A influenza, according to the CDC.

CNN: CDC confirms 7 cases of swine flu in humans

Since 2008, there have been 89 illegal animal violations but the violations database doesn't differentiate animals by type so there's no way to know how many of those violations were for pigs.

WSJ: Pigs May Fly Before Finding a Legal Home in the City