On March 29, 2025, two additional cases of measles were confirmed in Knox County among international travelers. These individuals are currently isolated, and their symptoms are being monitored throughout the isolation period.
Knox Public Health (KPH) has been collaborating with the affected individuals since contact tracing began. No further close contacts have been identified as a result of these cases.
Measles is known for its high contagion rate, capable of spreading from person to person even before symptoms appear. Symptoms typically manifest 7 to 14 days after exposure but can take up to 21 days in some instances. The symptoms include high fever, cough, runny nose, pink or watery eyes, and a red or brown blotchy rash that starts on the face and spreads downward. These symptoms usually subside within a week to nine days.
The Centers for Disease Control and Prevention advises that all children receive two doses of the measles, mumps, and rubella (MMR) vaccine. The first dose should be administered between 12 to 15 months of age and the second dose between four to six years old. Travelers should ensure they are fully vaccinated before traveling internationally. Infants aged six to eleven months should receive one dose prior to travel and two additional doses after their first birthday. Older children, adolescents, and adults lacking immunity evidence should also receive one or two doses of the MMR vaccine. The vaccine is noted for its effectiveness; receiving two doses makes it 97% effective at preventing measles.
According to the Ohio Department of Health, approximately one in five people who contract measles will require hospitalization. Encephalitis occurs in one out of every 1,000 cases due to infection-related brain swelling which may cause brain damage. Additionally, one to three out of every 1,000 infected individuals may die despite receiving optimal care.
Individuals unsure about their vaccination status or unvaccinated are encouraged to consult with healthcare providers regarding vaccination options. The MMR vaccine is considered safe and effective with hundreds of millions of doses administered globally.
Those exhibiting symptoms should remain at home and avoid contact with others while contacting their healthcare provider by phone rather than visiting in person without prior notice.
For further information and updates, visit Knox Public Health’s website at https://www.knoxhealth.com/index.php or learn more about measles at https://www.cdc.gov/measles/.
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