Anne Grintjes told the Madison, Wisconsin-based The Capital Times that her 6-year-old son is in the hospital with E. coli-related complications and her daughter is now complaining of stomach cramps, a symptom her son had before being diagnosed with hemolytic uremic syndrome, which can lead to serious kidney damage, failure, and death.

Wisconsin has been hit the hardest in the outbreak, linked to fresh spinach. E. coli has been blamed for the death of a 77-year-old Manitowoc woman.

On Saturday, health officials said two additional cases had been confirmed in the state, bringing the state total to 32. At least 109 people in 19 states have been sickened by the bacteria, according to the Centers for Disease Control and Prevention.