Florida health officials say they are now investigating 25 cases of a stomach bug that has infected people in 15 states.
The number of cylcospora cases under investigation in the Sunshine State increased again this week.
But Florida Department of Health officials said that they still have not found common links to restaurants or food ingredients that may have caused the outbreak.
Health officials in Nebraska and Iowa say they've traced cases there to prepackaged salad but Florida officials said they have not received information that would link the outbreak to bagged salad.
Cyclospora causes diarrhea and other flu-like symptoms. The illness spreads when people ingest foods or water contaminated with feces. Previous outbreaks of cyclospora infections have been linked to various types of fresh vegetables and berries.