10/31/2026
CELINA– Mercer County Health District is reporting one laboratory-confirmed case of measles in a Mercer County resident. The health department is conducting follow-up investigations to identify potential exposures. Based on information currently available, the health department believes it is unlikely that this individual was exposed to the public during their infectious period. However, there is evidence that measles is circulating in the region. Ohio has seen about 300 confirmed measles cases so far in 2026, and Indiana has seen about 100 confirmed cases.
Measles is a highly contagious viral disease that can lead to severe illness. It spreads through the air and can remain in the environment for up to two hours after the infected person leaves the area. Symptoms typically begin 10-12 days after exposure. Measles usually begins with a high fever, cough, runny nose, and red, watery eyes. A red, blotchy rash usually appears a few days later, starting on the head and face and spreading down the body. People with measles are contagious from four days before through four days after the rash appears.
The MMR vaccine is a safe and effective way to protect yourself and your family. The MMR vaccine protects against measles, mumps, and rubella. Two doses are 97% effective at preventing measles. According to the vaccine schedule, the first dose is given at 12-15 months of age, and the second dose is usually given at 4-6 years of age, before starting kindergarten. Children can receive their second dose as soon as 28 days after their first dose. In addition to vaccination, you are presumed immune to measles if you have had documented previous measles infection, or if you were born before 1957. Most people in our community are protected against measles.
Families and individuals should call the health department to check their vaccine records and arrange to receive their first or second dose of the MMR vaccine, as applicable. Please follow your school or daycare’s illness policies to keep sick children home. If you suspect measles symptoms or exposure, isolate yourself and seek medical care. Please call the medical office ahead of your arrival to let them know to take precautions to avoid exposing other patients and staff.
The Mercer County Health District will continue closely monitoring the situation and will share updates as needed. Please contact the Mercer County Health District at (419) 586-3251 with any questions, or to schedule a vaccine appointment.
