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

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

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.

North America has two other ongoing outbreaks, all of which are the same measles strain. One outbreak in Ontario, Canada, has ...

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

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

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

The Chicago Department of Public Health and Cook County Department of Public Health have identified two confirmed cases of measles. These are the first two cases in Cook County this year. One case was ...

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

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