The Oklahoma State Department of Health is joining other state and federal agencies in warning consumers not to eat certain jars of Peter Pan peanut butter or Great Value peanut butter, due to risk of contamination with Salmonella Tennessee, a bacterium that causes foodborne illness.

The affected jars of Peter Pan and Great Value peanut butter have a product code located on the lid of the jar that begins with the number "2111." Consumers should discard any Peter Pan or Great Value jars with this product code if the peanut butter was purchased since May 2006.

This warning follows an ongoing study by the Centers for Disease Control and Prevention and state health departments that so far has linked 288 cases of foodborne illness in 39 states to consumption of this code of peanut butter. The outbreak began in August 2006. In Oklahoma, 11 cases matching the outbreak strain have been identified. None were hospitalized due to their illness.