“National Institutes of Health workers preparing to move a lab in Bethesda, Md., found an unwelcome surprise in a storage room this month: six vials of smallpox. The vials labeled variola — a name for the smallpox virus — were found July 1 ‘in an unused portion of a storage room’ and seem to date to the 1950s, the CDC said. They were freeze-dried, intact and sealed, forgotten and packed away in a cardboard box, officials said. The vials were ‘immediately secured’ in a containment lab, then transported via government aircraft Monday to the CDC’s containment facility in Atlanta, it said. No documentation was found to explain how or why the virus was left in the Maryland facility.”
http://www.latimes.com/science/sciencenow/la-sci-sn-smallpox-20140708-story.html