Ninety-four of the 509 students at Groveland Park Elementary School in St. Paul were absent Wednesday, and several parents reported their children had vomiting and abdominal pain, school officials said.
While those are common symptoms of a food-borne illness, Ann Hoxie, assistant director of student health and wellness for the school district, said she believes it's more likely a routine stomach flu making the rounds.
Hoxie said she's been in touch with nurses at other schools in the district who reported no unusually high numbers of absences.
"We will continue to look at [the question of food-borne illnesses] but the logs we keep show all the foods were at the right temperature.
"Some kids who ate school lunches got sick and some kids who ate their bag lunches got sick," she said. "Nutrition staff ate the meals and none of them are sick. From where I stand, I think we've got something else going on."
On Thursday, school officials will compare the list of children who ate the school lunch with the absentee list.
The school district's nutrition staff prepares 30,000 lunches and 15,000 breakfasts each day, Hoxie said.
The illnesses weren't confined to any one grade at Groveland Park, she said.