Hamburg and Farragut schools are taking precautions against salmonella and waiting for information from state health authorities regarding four students reportedly treated for the bacterial disease.

Hamburg School Superintendent Jay Lutt said it’s unknown whether the cases in his district are linked to the salmonella outbreak in 20 states connected to Foster Farms. However, he says an investigation determined the illnesses are not linked to the district’s food provider.

“Even before I knew about that outbreak,” said Lutt, “I called the provider of our foods, which provides to all schools in southwest Iowa. In their 31 years of business, they have not had a case of salmonella. One thing we’re pretty certain is that it didn’t come from any of the food we bring in from their main supplier.”