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

Two more cases of measles have been reported in Illinois, bringing 2025’s total to six cases so far. According to the ...

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

How many measles cases in Illinois? So far, the health department has only reported one case in Illinois in 2025. The department said in a press release, "The risk of measles transmission for the ...

Measles cases have shown up in different parts of Illinois. While the outbreaks have been smaller than what some states are ...

According to the US Centers for Disease Control and Prevention, two doses of the MMR (measles, mumps and rubella) vaccine are ...

The Centers for Disease Control reports 800 confirmed cases of measles in 26 states including Missouri and Illinois.

Illinois health officials reported the state’s first case of measles of the year Wednesday, though much of the measles cases in the U.S. remain centered in Texas, which confirmed earlier this ...

As of May 8, the U.S. has logged more more than 1,000 measles cases across 31 states — compared to 285 cases in all of 2024.

Health officials issued an urgent advisory for individuals potentially exposed to measles at certain locations. Those not ...

Confirmed U.S. measles cases broke 1,000 in the second week of May, surpassing last year's total by nearly four times.