When it has never infected any pigs.
"According to the latest World Health Organization reports, the swine flu is no longer the swine flu because no pig in the world has been reported with the H1N1 which has killed 176 people in Mexico and one in the United States."
Fucking incredible. It also astounds me that some farmers care more about their pigs getting it than them getting it, as shown by this US farmer ""That is the biggest concern, that your herd could somehow contract this illness from an infected person. If a person is sick, we don't want you coming anywhere on the farm,"". Incredible.
Discuss names of what to call the swine flu that has never infected any pigs.