Swine flu has become an epidemic?
and dreadful too
Most commonly, swine flu is of the H1N1 influenza subtype. However, they can sometimes come from the other types, such as H1N2, H3N1, and H3N2.
The current outbreak of swine flu that has infected humans is of the H1N1 type - this type is not as dangerous as some others.
Avian Influenza (Bird Flu) can also infect pigs
Avian flu and human seasonal flu viruses can infect pigs, as well as swine influenza. The H3N2 influenza virus subtype, a virulent one, is thought to have come from pigs - it went on to infect humans.
It is possible for pigs to be infected with more than one flu virus subtype s ...more