Measles in Ohio – Measles, a highly contagious viral infection, has resurfaced in several states across the United States, including Ohio. Once declared eradicated in the U.S. in 2000, measles has made an alarming comeback, with case numbers rising at an unprecedented rate. As of early 2025, Ohio has reported multiple cases of measles, prompting concerns about public health safety and vaccination rates. This article explores the measles outbreak in Ohio, its causes, symptoms, risk factors, and the best preventive measures to protect individuals and communities.
Understanding Measles and Its Transmission
Measles is caused by the paramyxovirus, which spreads through respiratory droplets when an infected person coughs, sneezes, or even breathes. The virus can linger in the air and remain infectious for up to two hours after an infected person has left the area.
A single person infected with measles can spread it to 90% of nearby individuals who are unvaccinated, making it one of the most contagious diseases in existence. The infection rate far exceeds that of many other viruses, including COVID-19, emphasizing the need for high vaccination coverage to curb its spread.
Current Measles Outbreak in Ohio

As of 2025, Ohio has been identified as one of the states experiencing a measles outbreak. The Centers for Disease Control and Prevention (CDC) have confirmed that Ohio is among five states with an active outbreak, meaning three or more cases have been reported within a short time frame.
The outbreak in Ohio is primarily concentrated in Ashtabula County, with additional cases reported in Knox County. All reported cases involve individuals who were unvaccinated, underscoring the critical role of immunization in preventing the spread of the disease.
The rise in measles cases is not isolated to Ohio; the entire country has seen a sharp increase in cases due to declining vaccination rates. The resurgence of measles is attributed to vaccine hesitancy, misinformation about vaccine safety, and disruptions in routine immunization schedules during the COVID-19 pandemic.
Symptoms of Measles

Measles symptoms typically appear 10-14 days after exposure to the virus. The infection progresses through three distinct stages:
1. Initial Symptoms (Prodromal Phase):
- High fever (often over 104°F)
- Runny nose
- Persistent cough
- Red, watery eyes (conjunctivitis)
- Sore throat
2. Rash Development:
- After 2-3 days, small white spots known as Koplik’s spots appear inside the mouth.
- A red rash starts on the face and spreads to the rest of the body within days.
- The rash usually lasts for a week before fading.
3. Complications and Severe Cases:
Measles can lead to severe health complications, especially in young children, pregnant women, and individuals with weakened immune systems. Common complications include:
- Ear infections
- Pneumonia
- Brain swelling (encephalitis)
- Long-term neurological damage
- Death in severe cases
Who Is at Risk?
Certain populations are at higher risk of contracting measles and experiencing severe complications:
- Unvaccinated individuals: Those who have never received the MMR (measles, mumps, and rubella) vaccine are most vulnerable.
- Young children and infants: Babies under one year old who are too young for full vaccination are at significant risk.
- Immunocompromised individuals: People with weakened immune systems, such as cancer patients or those undergoing organ transplants, face higher risks.
- Pregnant women: Measles during pregnancy can lead to premature birth, low birth weight, or miscarriage.
The Role of Vaccination in Preventing Measles

The measles vaccine, administered as part of the MMR vaccine, is the most effective way to prevent measles outbreaks. The vaccine is given in two doses:
- First dose: Around 12-15 months of age
- Second dose: Between 4-6 years old
The MMR vaccine is 97% effective after two doses and provides lifelong immunity for most individuals.
Vaccine Exemptions and Their Impact
In Ohio, while most children receive the MMR vaccine before attending school, exemptions for medical, religious, or philosophical reasons have contributed to declining immunization rates. The CDC has noted that even a slight drop in vaccination rates can result in outbreaks, as seen in recent cases across the state.
Public Health Response to the Measles in Ohio

Health officials in Ohio are actively monitoring and containing the spread of measles by:
- Conducting contact tracing to identify and notify exposed individuals.
- Providing free or low-cost vaccinations through public health clinics.
- Recommending isolation for infected individuals to prevent further transmission.
- Educating communities about the importance of vaccination to curb misinformation.
Local health departments urge unvaccinated individuals to get vaccinated immediately to prevent further outbreaks.
How to Protect Yourself and Your Family
1. Get Vaccinated
If you or your child has not received the MMR vaccine, schedule an appointment with your healthcare provider as soon as possible.
2. Be Aware of Symptoms
If you or a family member develops symptoms of measles, seek medical attention immediately. Early detection can prevent complications and reduce further spread.
3. Avoid Contact with Infected Individuals
If a measles case has been reported in your community, limit exposure by avoiding crowded places where transmission is more likely.
4. Follow Travel Guidelines
Measles outbreaks are often linked to international travel. If you plan to travel, ensure that all family members are up to date on vaccinations.
5. Maintain Good Hygiene Practices
While vaccination is the most effective measure, practicing good hygiene, such as regular handwashing and avoiding contact with sick individuals, can help prevent transmission.
Conclusion
The measles outbreak in Ohio serves as a stark reminder of the importance of vaccination in disease prevention. While measles was once eliminated in the United States, declining immunization rates have allowed the virus to resurface. The best defense against measles is widespread vaccination and public awareness.
Health officials continue to urge Ohio residents to check their vaccination status, especially as cases are expected to rise. By taking proactive measures and prioritizing immunization, we can prevent future outbreaks and protect public health.