Illinois Measles Cases Hit 23 in 2026, Most From Douglas, Moultrie Counties Outbreak

23 Measles Cases Confirmed in Illinois This Year Amid Ongoing Outbreak

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Measles outbreak in Illinois grows to 16 cases

The cases – in Douglas and Moultrie counties – have been among people who are not vaccinated against measles or whose vaccination status is unknown, according to the Illinois Department of Public Health.

Illinois measles cases hit 23 in 2026, most from Douglas, Moultrie counties outbreak

Sixteen of the state's cases this year trace to an outbreak among people who were unvaccinated or had an unknown vaccination history. Health officials say the overall risk is very low but want residents to confirm they're protected.

23 cases of measles were confirmed in Illinois this year. See where you could've been exposed

There have been 23 confirmed cases of measles in Illinois this year, officials said on Friday while asking residents to get vaccinated.

Illinois reports increased measles cases as 9 counties have insufficient vax rates

The Illinois Department of Public Health has already reported more measles cases so far this year than the state saw in 2025, with 22 cases reported, compared to 14 last year.

Illinois surpasses 2025 measles case count amid falling vaccination rates

ROCKFORD, Ill. (WTVO) — Illinois has already surpassed the number of measles cases reported last year, while health officials warn that vaccination rates in several counties have dropped below the level needed to prevent outbreaks. According to the Illinois Department of Public Health, the state has reported 22 measles cases so far in 2026, compared [...]