The Illinois Department of Public Health (IDPH) is sounding the alarm on a potential measles exposure at Chicago O’Hare International Airport. Here's what you need to know.

It was not immediately clear where in Illinois the fourth case was reported, or what condition the patient is in.

Two measles cases have been confirmed in Cook County amid the latest 2025 outbreak, public health officials announced ...

As measles cases are on the rise in the United States, Chicago has reported the city's first case of the year. The Chicago ...

Measles cases in the United States climbed to 939 in 29 states, the Centers for Disease Control and Prevention said Friday.

The Illinois Department of Public Health is reporting four measles cases in the state of Illinois for the year 2025.

Measles cases in the U.S. have surpassed 900 as outbreaks continue to spread across the county, according to new CDC data ...

Most of the cases have been concentrated in West Texas, where a months-long outbreak has spread to nearby states and even neighboring Mexico. No cases of measles have been reported in ...

Chicago doctors are frustrated as measles cases spread into Cook County, saying "This is an effective vaccine." ...

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

Health authorities have alerted the public about potential measles exposure at Chicago O'Hare Airport following two confirmed ...

North America’s three biggest measles outbreaks continue to balloon, with more than 2,500 known cases; three people have died ...