Students at Willow and Sheridan Road Elementary Schools are now instructed by their teachers to wash their hands four times a day.
Spokesman for the Lansing School District, Mark Mayes, says right now, more important than finding the initial source of the bacteria is stopping the illness from spreading and creating new cases.
School and health officials say the bigger threat at this point is stopping the spread of the bacteria in schools and at home. They say new cases are being reported, and they have been acquired in households.
The best precaution is to wash your hands before and after you eat, and always after using the bathroom.
There will be a parent meeting held by school and health officials Wednesday, Oct. 27. It's scheduled for 6:45 p.m. at Willow Elementary located at 1012 W. Willow Street. The Superintendent of Schools, Dr. Sharon Banks, and Ingham County Medical Director, Dr. Dean Sienko will be heading the meeting.