Atlanta — The Centers for Disease Control is collaborating with public health officials in several states and the U.S. Food and Drug Administration (FDA) to investigate a multistate outbreak of Salmonella Typhimurium infections. Joint investigation efforts indicate that cantaloupe grown in southwestern Indiana is a likely source of this outbreak. As a result of the initial investigations by the state health departments in Indiana and Kentucky, a farm in southwestern Indiana has contacted its distributors, which reach outside Indiana into other states, and is withdrawing its cantaloupe from the market place.The farm has agreed to cease distributing cantaloupes for the rest of the growing season.

Public health investigators are using DNA “fingerprints” of Salmonella bacteria obtained through diagnostic testing with pulsed-field gel electrophoresis, or PFGE, to identify cases of illness that may be part of this outbreak.