DES MOINES - An Iowan who became ill with Salmonella has been linked to a national outbreak that has sickened more than 400 people.
State Public Health Department officials say the Iowan recovered but the source of the illness remains under investigation.
Agency spokeswoman Polly Carver-Kimm says the DNA fingerprint of the Salmonella that sickened the Iowan matches the DNA fingerprint that's caused the national outbreak.
Salmonella can cause diarrhea, fever and abdominal cramps.
The source of the national outbreak is unclear, although peanut butter distributed by King Nut Companies of Solon, Ohio, has been linked to most of the 30 cases in Minnesota.
The peanut butter was distributed through food service providers and not sold directly to consumers or distributed in Iowa.