Multiple strains of Salmonella bacteria were detected in pistachios (roasted shelled, roasted in-shell, raw) that were sold and subsequently distributed widely throughout the United States. The pistachios were repackaged and sold under many names. The Food and Drug Administration provided the Centers for Disease Control with the genetic fingerprints of the Salmonella strains that had been found in the pistachios. Some of the genetic fingerprints matched Salmonella strains from recently ill persons, but these illnesses could not be proven to be due to consumption of pistachios. One patient in Connecticut who was infected with a Salmonella strain with a matching genetic fingerprint recalled eating a pistachios prior to becoming ill.