A USDA investigation has revealed more mistakes behind a June incident that saw over 75 Center for Disease Control staff exposed to live anthrax. A summary of the results, published today ahead of a House Energy and Commerce Committee meeting, elaborates on a similar report by the CDC, which found that one of its facilities failed to sterilize samples before sending them to a lower-security lab. In todays meeting, the Subcommittee on Oversight and Investigations will attempt to determine whether this and other security breaches were an established pattern at the CDC, and whether Congress or the USDA should take further action to make sure they dont happen again.