Health officials in Indiana and Kentucky say they are investigating farms, distributors and retailers after an outbreak of salmonella that has sickened 150 people nationwide was linked to cantaloupe grown in southwest Indiana.

Officials on Friday advised all Indiana residents to discard cantaloupes bought since July 7.

The Kentucky Department of Public Health warned people not to eat cantaloupes grown in southwest Indiana after tests found the fruit carried the same strain of salmonella that has killed two and sickened more than 50 in Kentucky.

Kroger spokesman John Elliott said his company’s grocery stores in the Fort Wayne area have been selling cantaloupes from California since Aug. 9. Earlier in the summer, the stores sold Indiana cantaloupes, he said.

“Indiana melon had pretty well worked its way through the system by early August at the latest,” he said.

On Friday, the Meijer store at 5909 Illinois Road was selling cantaloupe from an Arizona distributor. Attempts to reach Meijer representatives by phone were unsuccessful.

Salmonella infections result in diarrhea, fever and abdominal cramps and the illness usually lasts four to seven days. Health officials say most people recover without treatment but severe infections can occur in infants, the elderly and those with weakened immune systems.

Archie Ingersoll of The Journal Gazette contributed to this story.