Genetic analysis of the new H1N1 virus reveals that three of its genes, including the hemagglutinin gene (the H in H1N1), originally came from the 1918 Spanish influenza virus and have been present in pigs ever since. The genes have not changed much, likely because pigs do not live long enough to get reinfected with the same virus,
TVNL Comment: This is a man made flu. Where do you think those genes came from? Here is where: