New analysis of data from the Illinois Board of Education found less than half of Chicago Public Schools had herd immunity ...

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

A Sun-Times analysis of state data found the rate of vaccinations has dropped sharply from the rate in 2019, when 90% of schools were at herd immunity.

The Illinois Department of Public Health (IDPH) is sounding the alarm on a potential measles exposure at Chicago O’Hare ...

A confirmed case of measles found in the Chicago O'Hare airport has put Tippecanoe County health officials on alert ahead of ...

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

Two cases of measles have been reported in Cook County, according to the Chicago Department of Public Health and Cook County ...

Cases of the highly infectious disease measles are popping up in cities and states across the country, including in Illinois, ...

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

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

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

New analysis found that less than half of Chicago Public Schools have herd immunity against the measles as of 2025. More than ...