Also last week, a report surfaced that revealed a peanut shipment from the plant linked to salmonella was denied entry into Canada even before the health scare began. The FDA said it wasn't until that shipment was rejected that the FDA knew this plant was in the peanut butter business.
Another FDA inspection report revealed that the plant found some type of salmonella in its products 12 times over the last year and a half. It also documented unsanitary conditions at the plant, including cockroaches, mold and leaking roofs.
"Our top priority has been -- and will continue to be -- to ensure the public safety and to work promptly to remove all potentially contaminated products out of the marketplace," Peanut Corp. of America said in a Friday statement. "To that end, we have issued extensive recalls that broadly encompass potentially contaminated product."
President Obama has not yet announced his pick for FDA commissioner, though White House spokesman Robert Gibbs said last week the selection was coming in the next few days. That person will oversee an agency that Rep. John Dingell, D-Mich., recently told ABC News is in desperate need of money, personnel and authority to strengthen the nation's food safety system.
"Until Congress acts, until this administration undoes some of the doings of the prior administration, I think you can look forward to more scandals of this kind," Dingell said.
"We do not routinely look at returned goods for every possible microbe, agent, chemical problem that could be in there," FDA food safety director David Acheson told ABC News. "There's just hundreds. It would be very resource-intensive and time-intensive."
To make sure shoppers don't get sick, health officials have posted several resources online, including updates on recalled products listed by the FDA and updates on illnesses, compiled by the Centers for Disease Control and Prevention.
The American Peanut Council has also posted a list of companies that say their products are safe to eat.
ABC News' Brian Hartman and the Associated Press contributed to this report.