The H5N1 virus is the Influenza A virus "spanish Flu" a variant of the H1N1. The swine influenza virus is just another strain. They are all subtypes, different strains that have branched off. Same as the bird flu (avian influenza). With so many strains and constantly mutating amino acids in them, a strain of influenza is bound to make its way back to infecting humans, thats what virus do. We have known this would happen and have been waiting for it, its always just a matter of time. Difference is now we can better combat types on influenza. Is that to say that a pandemic(they usually occur every 20yrs) wont take some lives with it. No, of course lives will be lost with a new virus, but will it be like the 50-100 million lost in the spanish flu? No... it wont be that bad. The only thing at fault here for this is nature... no government, no god or devil, no higher power or man or anything of the sort.