Well don't look now, but the DoD is out warning that the army might have also mishandled samples of the black plague which isn't known to be dangerous unless you count the time it wiped out 60% of Europe's entire population. Here's more from CNN:

The U.S. Department of Defense is looking into possible mishandling of bubonic plague and equine encephalitis samples at its laboratories, a Pentagon spokesman said Thursday.

The new inquiry is part of an investigation into the mishandling of anthrax at Department of Defense labs, Pentagon spokesman Peter Cook said.

The department hasn't determined whether samples containing plague bacteria and specimens of the deadly virus were shipped from its labs, Cook said.

The latest investigation started after CDC inspectors found a sample of the plague in a freezer outside of a containment area on August 17 at the Edgewood Chemical Biological Center in Maryland, Cook said.