Vaccination Details and Timeline
Officials reported the adult had received one prior dose of the MMR (measles, mumps, rubella) vaccine. They later developed a rash on April 25, and testing confirmed measles infection.
The individual is an adult who lives in the same Illinois county. They sought care at a local hospital on April 28, where medical staff quickly isolated them to reduce any risk of further spread.
What to Do If You Were at O’Hare During Those Times
Health authorities recommend that anyone who may have been in Terminal 1 during the listed dates and times should:
- Contact a healthcare provider if they have concerns or are unsure about vaccination status
- Monitor for symptoms, especially fever, cough, runny nose, red eyes, and a rash
- Follow medical guidance on testing or next steps if symptoms appear
This alert comes amid a broader pattern of heightened monitoring as health departments respond to reported measles cases connected to travel corridors, including major airports and nearby communities.
Stay Informed
If you traveled through Chicago O’Hare Terminal 1 on April 22 or 23, keep an eye on official updates and take precautions if you feel unwell.
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