From Scientific American:

A workplace accident might mean a paper cut or spilled coffee for many—or even loss of life or limb for others. For a select few scientists, however, a little slipup on the job could release a deadly virus or toxin into the environment.

Some 395 reported “potential release events” of “select agents” occurred in U.S. government laboratories between 2003 and 2009, the University of Minnesota’s Center for Infectious Disease Research and Policy (CIDRAP) reported. “Select agent” is government-speak for a biological agent or toxin that is considered to pose “a severe threat” to human, animal or plant health—or livestock and agricultural products. Special approval from the government is required to handle these agents and toxins, and that can only happen in specially equipped labs.

Not all labs, of course, are of the Contagion and Outbreak biosafety level-4 ilk that handle mega-killers such as Ebola and smallpox. But there are plenty of other organisms studied in government labs that can easily infect and sicken humans if an accidental release occurs.

Just what were these little incidents? Most (196) were an unspecified “loss of containment.” There were also 77 reported spills and 46 accidental needle sticks or other “sharps” injuries, according to unpublished data collected in 2010 by the U.S. Centers for Disease Control and Prevention (CDC). With all of these incidents, however, only seven lab-acquired infections were reported: four Brucella melitensis (which also infects cows and sheep), two Francisella tularensis (also known as rabbit fever, which is a class A, highly virulent bacterium) and one case of San Joaquin Valley Fever (Coccidioides, an infectious fungus).

These CDC mishaps are described as part of a National Research Council (NRC) review published earlier this month in preparation for assessing the risks of a proposed bio-research facility at Fort Detrick in Frederick, Md. (The CDC plans to publish a more detailed analysis of potential releases in early 2012, CIDRAP noted.)