LEXINGTON, Ky. — The Lexington-Fayette County Health Department has confirmed 37 cases of pertussis, commonly known as whooping cough, in Fayette County since October 3, 2025, according to an updated report from the health department. One new case was reported since March 24, 2026.

The majority of cases involve school-age children, with 33 confirmed among that population. Two additional cases were identified in 4-year-old children and two in a 1-year-old child. Notably, 35 of the individuals diagnosed with pertussis were up to date on their vaccinations.

Cases have been distributed across multiple schools and childcare facilities throughout the county, including 13 cases at Paul Laurence Dunbar High School and 7 at Lafayette High School. Additional cases have been confirmed at numerous elementary schools, middle schools, high schools, and early childhood education centers across Fayette County.

Pertussis is a highly contagious respiratory illness spread through coughing and sneezing that can be particularly severe for infants and those with chronic conditions. Symptoms initially resemble a common cold, including runny nose, sneezing, low-grade fever, and a persistent cough. After one to two weeks, the cough may intensify into uncontrollable episodes sometimes accompanied by a distinctive "whooping" sound when gasping for air, along with vomiting and exhaustion.

Dr. Crystal Miller, Commissioner of Health for LFCHD, emphasized the importance of vaccination. "Vaccines are one of the major achievements of modern medicine, helping eradicate diseases. Pertussis is one of those vaccine preventable diseases. We encourage families to get their children vaccinated and stay up to date on vaccines," Miller said.

The pertussis vaccine is routine and required for school-age children, with a Tdap booster recommended for those aged 11 and older. Though effective, immunity can diminish over time, making boosters critical for older children and adults. Individuals who have never received the Tdap vaccine should contact their primary care provider or call LFCHD at 859-288-2483 during Monday through Thursday business hours.

Children displaying pertussis symptoms should remain home from school and seek evaluation from a healthcare provider. Those diagnosed with confirmed or probable pertussis must remain out of school until completing antibiotic treatment. Household members of infected individuals are recommended to take postexposure prophylaxis to prevent transmission. For additional information, residents can visit LFCHD.org/pertussis.