WASHINGTON — The Agriculture Department said this morning it shipped possibly contaminated peanut butter and other foods in 2007 to schools in at least three states under a contract with the Georgia company blamed for a nationwide salmonella outbreak.

The government abruptly suspended all business with the company Thursday, as officials defended their efforts to halt the outbreak that has sickened at least 575 people in 43 states. At least eight have died.

It's become one of the largest food recalls ever, including more than 1,300 products.

The potentially contaminated products went to school free lunch programs in California, Minnesota and Idaho in 2007, the Department of Agriculture said today. Peanut butter and roasted peanuts processed by the Peanut Corp. of America were sent to the schools.

None of the states reported illnesses as a result of students eating the recalled peanut products.

Jim Brownlee, a spokesman for the Agriculture Department, said there have been no potentially contaminated shipments from the company in the past year. It was unclear how much of the suspect food might still remain uneaten at the schools.