ConAgra Foods Inc. (NYSE: CAG) announced Tuesday that it is recalling its Peter Pan and Great Value Peanut Butter brands as U.S. health officials investigate the products due to risk of salmonella contamination.

The Omaha, Neb.-based company said peanut butter with product code 2111 would be affected. The FDA issued a warning Thursday, based on a Center for Disease Control and Prevention saying there have been 288 cases of food poisoning in 39 states.

The outbreak appears to be ongoing and the first consumer may have become ill in August 2006, the FDA said in a statement.

ConAGra urged consumers to discard the product but save the product lids for a full refund. The FDA said ConAgra will cease production of the product until the cause of contamination can be identified and eliminated.

FDA investigators have been sent to ConAgra manufacturing facilities to review records, colllect product samples, and conduct tests for Salmonella, the government agency said.

ConAgra said its product tests had not indicated salmonella presence, but was taking the precautions.

Consumers were asked to send questions or show condern could call a toll free number.

Shares of ConAgra Foods closed up 24 cents, or 0.93 percent, to $26.09 in Thursday trading on the New York Stock Exchange.