February 25, 2011 (EVANSTON, Ill.) --
Thirty parents, teachers and students became ill after a parent-teacher conference in Evanston.Investigators believe they have pinpointed the cause of the outbreak at Haven Middle School
The conference which took place February 16, was catered by Merle's Number One Barbecue.
The state health department says its investigation reveals there was unsafe food handling and storage at both the restaurant and school.