This Is How The Swine Flu Gets Released!

Video: Antigenic Shift – the Spread of a New, Mutated Virus

Only the influenza type A virus is capable
of what is known as antigenic shift,

The current flu in circulation is an entirely new, mutated
pathogen formed from elements of human, pig, and
avian virus strains.

Overflowing with mutated viruses, the pig’s respiratory
epithelial host cells eventually burst open and circulate
the flu virus into the susceptible human population.