The two cases are the first in Cook County in 2025, with O'Hare Airport's Terminal 1 identified as a possible point of public exposure By NBC Chicago Staff • Published April 30, 2025 • Updated ...

Cook County reports first 2 measles cases of 2025 One case was detected in a Chicago resident who recently traveled through O’Hare Airport. The other case was reported in a suburban Cook County ...

Two recent measles cases in Cook County, Illinois, one involving an international traveler at O'Hare Airport, have raised concerns in Tippecanoe County.