The Pentagon said Thursday that procedures at an Army lab were to blame.
An Army lab accidentally sent live anthrax samples to 12 states and three countries.
Senate Homeland leaders gave the Pentagon a June 15 deadline.
A DOD spokesman stressed that there are "no risks to the public."
A new investigation has uncovered even more safety lapses at the CDC.
Democrats want a hearing on a new drug which could raise Medicare D costs.
It has been more than seven years since the anthrax attacks. The attacks, which evidently...
"We expect this number may rise," an official said.
The Pentagon shipped live anthrax to at least 24 labs in 11 states and two countries.
The incident occurred in 2008, according to a defense official.
Three Republicans voted with Dems, but the bill fell short of 60 votes, 56-43.
House GOP want CDC safety audit reports after recent mishandling of live anthrax bacteria.
The Atlanta-based workers are being monitored for signs of infection.
A congressionally-mandated bipartisan commission announced recently it has found that terrorists...