CHICAGO - Cook County health officials have confirmed a second case of measles so far this year.

The case involves a 4-year-old child who was not vaccinated and is believed to have contracted the illness during international travel, according to the Cook County Department of Public Health (CCDPH).

What we know:

Officials said anyone who was in Terminal 5 at O’Hare International Airport on Sept. 11 between 7:30 a.m. and 11 a.m. may have been exposed.

The CCDPH is working to identify and notify individuals who may have had contact with the virus.

What you can do:

Those who think they may have been exposed should review their measles, mumps and rubella (MMR) vaccination history with their health care provider.

Officials recommend contacting a medical provider before visiting a clinic

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