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Measles cases in Kentucky rise to 197, concentrated in three counties
Kentucky reported 197 measles cases as of Oct. 23, compared with 13 during all of 2025. Most cases are in Christian, Laurel and Trigg counties; none have been reported in Louisville/Jefferson County.
Kentucky had recorded 197 measles cases this year as of Friday, Oct. 23, a sharp increase from 13 cases in 2025, according to figures reported by state health officials.
The outbreak is concentrated in southwestern Kentucky. Christian County had 63 cases, Laurel County 56 and Trigg County 31. No cases had been reported in Louisville or Jefferson County as of Friday.
UofL Health physician Dr. Mark Burns said measles symptoms typically begin seven to 14 days after infection. People can spread the virus about four days before symptoms start and for roughly four days afterward, meaning they may be contagious before they realize they are sick.
Health professionals recommend that people who are not vaccinated get vaccinated. Those who are unvaccinated or unsure of their vaccination status face the greatest risk of infection. Anyone who suspects they may have measles should contact a health care provider and avoid contact with others.
Measles can cause serious complications. The Centers for Disease Control and Prevention estimates that one to three of every 1,000 infected children die from respiratory or neurologic complications. Older adults and people with weakened immune systems are also at increased risk of complications.