SPRINGFIELD, Ill. – One case of measles has been reported in Southern Illinois.

The Illinois Department of Health (IDPH) made the announcement today, saying that the case involves an adult.

IDPH says this is the only case it is aware of, and it is not considered an outbreak at this time. The health organization says the risk of community transmission in the state remains low.

“This first reported case of measles in Illinois in 2025 is a reminder to our Illinois residents that this disease can be prevented with up-to-date vaccination,” said IDPH Director Dr. Sameer Vohra. “With hundreds of cases being reported nationally, we have been working closely with our local public health and health care partners to prepare for any potential measles cases in Illinois.”

The southern Illinois clinic that is taking care of the patient with measles is looking to identify others who may have been possibly exposed and observe their immune status.  

There has not been a reported measles case in Illinois since 2024, which resulted in 67 cases. IDPH urges individuals to be up-to-date on their MMR vaccinations, as well as other necessary immunizations.

Potential symptoms for the measles include a fever, cough, runny nose, watery eyes amd sore throat. 

Those who are experiencing any form of those conditions are urged to contact their local health department if they become symptomatic. 

Further updates will come from the IDPH once it becomes available.