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• n  the virus that causes smallpox in humans; can be used as a bioweapon

• variola virus

News & Articles

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• Will Smallpox Reemerge in Siberia as Corpses Thaw from Climate Change?
  In an article primarily about the potential folly of holding onto stockpiles of smallpox virus for research purposes—a now-eradicated plague that humans no longer have natural immunity to and that would very likely cause a worldwide catastrophe should it escape from the lab—the BBC includes one awesomely horrible detail. Could the frozen bodies of smallpox victims in Siberia, now thawing because ...
  Feb. 3, 2014 - Gizmodo