Smallpox found in a laboratory fridge

Source:

• 
  July 8, 2014. Henry Fountain. “Six Vials of Smallpox Discovered in Laboratory Near Washington.” The New York Times, sec. Science.
  https://www.nytimes.com/2014/07/09/science/six-vials-of-smallpox-discovered-in-laboratory-near-washington.html.
  News.

See also, on this site:

• Congress placed a moratorium on chimeric virus research.