Kentucky Measles Cases Reach 204 in 2026, With Adults Now the Largest Group
Kentucky has confirmed 204 measles cases in 2026, state health data show, with adults accounting for 96 cases, 13 hospitalizations reported and no deaths in the state.
Kentucky health officials have confirmed 204 measles cases in the state since the start of 2026, according to the Kentucky Department for Public Health measles dashboard reported by the Louisville Courier Journal on Nov. 4.

Four cases were confirmed in January. The rest followed an outbreak that officials confirmed in August, the Courier Journal reports. State officials said the majority of cases have been found among close-knit, under-vaccinated communities.
Where the cases are concentrated
Christian County has 66 cases, Laurel County has 56 and Trigg County has 32, according to the Courier Journal. Medical Daily, reporting state data as of Nov. 2, puts Bath County at 15 cases, making it the fourth-largest cluster in the state. Bath County reported its first case in mid-October and reached 15 cases by Oct. 29, according to Medical Daily.

The age breakdown in the Nov. 2 data shows 24 cases in children under 5, 84 cases in children and teens ages 5 to 17, and 96 cases in adults ages 18 and older, Medical Daily reports. Adults are now the largest age group in the outbreak. Hospitalizations have risen to 13 in the Nov. 2 data, and no deaths have been reported in Kentucky, according to Medical Daily.
Only two of the 204 people with confirmed cases reported having received at least one dose of the measles, mumps and rubella vaccine, according to the Courier Journal. State officials have called the outbreak the largest in Kentucky since 1991, Medical Daily reports. By comparison, Kentucky confirmed 13 measles cases in all of 2025, according to the Courier Journal.

What health officials advise
Two doses of the MMR vaccine are about 97 percent effective at preventing measles, and one dose is about 93 percent effective, according to the state figures cited by Medical Daily. Pregnant women should not receive the MMR vaccine during pregnancy, Medical Daily reports, and people planning a pregnancy should check their immunity beforehand and speak with an obstetrician if they may have been exposed.
Measles usually begins with high fever, cough, runny nose and red, watery eyes, followed by a rash that starts on the face, according to Medical Daily. People can spread the virus for about four days before and after the rash appears. Anyone with symptoms or a possible exposure should call a clinic, urgent care center or emergency department before arriving so staff can protect others, Medical Daily reports.
Only 90.7 percent of Kentucky kindergartners were fully vaccinated against measles in the 2025-26 school year, below the national average of about 92 percent, according to a state announcement cited by Medical Daily. Coverage among 7th and 11th graders stayed above 95 percent, Medical Daily reports.
Reporting based on coverage by the Louisville Courier Journal and Medical Daily.