It's a terrifying word. But what does it really mean? The recent outbreak of H1N1 is only the latest in a series of deadly global battles between man and virus. And as scientists learn more about the ways viruses mutate and replicate, an ...See moreIt's a terrifying word. But what does it really mean? The recent outbreak of H1N1 is only the latest in a series of deadly global battles between man and virus. And as scientists learn more about the ways viruses mutate and replicate, an international effort is underway to track and vanquish humanity's most lethal foes. Written by
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