Measles Update

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Last updated: August 24, 2026 at 12:03 pm

Confirmed Measles Case in Kane County

Kane County Health Department is investigating a confirmed case of measles in a Kane County resident. KCHD is working with healthcare providers, schools, community partners and the Illinois Department of Public Health (IDPH) to identify and notify people who may have been exposed and provide education about measles and the importance of vaccination.

How to Protect Yourself from Measles

The best way to prevent measles is vaccination. The measles, mumps and rubella (MMR) vaccine is highly effective at preventing measles, and two doses are approximately 97% effective.
Check your vaccination records to determine whether you have received the MMR vaccine or have other evidence of immunity.

People born in 1957 or later who don't have vaccination records should talk with their healthcare provider; depending on the person and circumstances, the provider may recommend MMR vaccination or evaluation for evidence of immunity.
Contact your healthcare provider if you are unsure whether you are protected against measles.
You may be able to view your records on Vax Verify.
You may also be able to obtain records from your previous healthcare provider, school, employer or the state immunization information system where your vaccinations were given.

Follow any quarantine instructions provided by KCHD or another public health authority.
Monitor for symptoms for 21 days after a potential exposure.
If you develop symptoms and believe you may have been exposed to measles, call your healthcare provider before going to a medical office, urgent care or emergency department. This allows the healthcare facility to make appropriate arrangements to protect other patients and healthcare workers.

What Are the Symptoms of Measles?

Measles is a highly contagious respiratory illness. Symptoms may include:

Fever
Cough
Runny nose
Red or watery eyes
Rash

Symptoms generally develop 7–21 days after exposure.

If you develop symptoms and think you may have been exposed to measles, call your healthcare provider before going to a medical office, urgent care or emergency department. Do not arrive at a healthcare facility without calling first.

Where Can I Get Immunizations/Vaccines?

Your physician
Your pharmacy
Area health centers that often accept Medicare/Medicaid or offer free or sliding-scale services for low-income families
The Kane County Health Department provides immunizations for children with Medicaid plans or who are uninsured or underinsured until their 19th birthday. We also provide vaccines for adults who are uninsured or underinsured. To learn more about eligibility, schedule an appointment, or obtain a referral, please call 630-208-3801.

What Is KCHD Doing?

The Kane County Health Department is:

Investigating the confirmed case.
Identifying potential exposure locations and individuals.
Notifying people who may have been exposed.
Working with schools, healthcare providers and community partners.
Coordinating with the Illinois Department of Public Health.
Providing guidance regarding vaccination, immunity and quarantine.
Monitoring for additional cases.

Because the investigation is ongoing, additional exposure information may be added to this page as it is confirmed.

Important Information About Exposure

Being exposed to measles does not mean that you have measles. People who have been exposed may be asked to monitor for symptoms, provide documentation of immunity, or quarantine depending on their individual circumstances.

KCHD will provide additional guidance to people who are identified as potentially exposed.