Half of U.S. measles cases from Chicago Tim Stumm 9 months ago Krzysztof Ziarnek, Kenraiz under CC BY-SA 4.0 More than half of the country’s 113 measles cases so far this year are from Chicago. That’s according to a recent update from the Centers for Disease Control and Prevention.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.