No one died, and regulators said the public was never at risk during these incidents. But the documented cases reflect poorly on procedures and oversight at high-security labs, some of which work with organisms and poisons so dangerous that illnesses they cause have no cure. In some cases, labs have failed to report accidents as required by law.

The mishaps include workers bitten or scratched by infected animals, skin cuts, needle sticks and more, according to a review by The Associated Press of confidential reports submitted to federal regulators. They describe accidents involving anthrax, bird flu virus, monkeypox and plague-causing bacteria at 44 labs in 24 states. More than two-dozen incidents were still under investigation.

 Source : Yahoo Science