Every year, 36,000 Americans die of the flu and one million die worldwide. The possibility of a super flu pandemic is frightening. If no one has immunity, it could cover the globe in 250 days and conceivably infect 20 percent or more of the world's population of 6.6 billion. The 1918 Spanish flu killed 675,000 Americans and at least 50 million worldwide. The death toll from the bird flu virus--with a 50% kill rate in adults and a frightening 89%...