Let's hope not, but this has the potential to be nasty. I believe this is the first time we are seeing swine flu in humans. If it has mutated then it is a big source of concern.
It sounds as if someone has been playing with their home genetic engineering kit.
"The new virus has genes from North American swine and avian influenza; human influenza; and swine influenza normally found in Asia and Europe, said Nancy Cox, chief of the CDC's Influenza Division.
The new strain of swine flu has resisted some antiviral drugs."