Based on what I have read about the swine flu, it could easily mutate into something extremely deadly, or into something less harmful. The Spanish flu of 1918 killed about 100,000,000 people globally. It had the same name (H1N1) as the recent swine flu (H1N1). I am terrified that within the next few years, it could leave more than 1,000,000,000 people dead. The cases worldwide appear to be doubling with each passing day. Is it possible for the entire human population to be infected with this disease? What percentage of them will die? How long does a pandemic virus usually live until it eventually starts to "die down?"