As the virus takes hold in other U.S. communities with low vaccination rates, health experts fear that the spread could ...

The cases are the first to be diagnosed in Cook County since March 8, 2024, when an outbreak of measles that began in a ...

One case was detected in a Chicago resident who recently traveled through O'Hare Airport. The other case was reported in a ...

The Cook County cases follow the first case of measles this year in Illinois in an unvaccinated adult in Marion, reported ...