Health officials investigate two cases of Legionnaires’ disease at UChicago Medicine May 6, 2019 | Hospitals, Top Stories The Illinois Department of Public Health is investigating two cases of Legionnaires’ disease at the University of Chicago Medical Center.To access this content, you must purchase 1 Year Health News Illinois Subscription or 1 Year Group Subscription - Up to 5 Users, or log in if you are a member.