Perhaps, in some innocent encounter in China between a child and a bird, a new killer flu is on its way. Or perhaps, even now, a young man or a young woman has become infected with two different strains of flu viruses. They are mixing together in the person’s lungs, their genes reassorting. Emerging from that witches’ brew is a new virus, a chimera, that, like the 1918 flu virus, is perfectly suited for destruction. Perhaps, as we grow almost smug about influenza, that most quotidian of infections, a new plague is now gathering deadly force. Except this time we stand armed with a better
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