Measles
What is measles?

Measles is very contagious and can cause serious illness. Measles is caused by a virus and spreads very easily when an infected person breathes, coughs or sneezes. Measles spreads so easily that anyone who is exposed and not immune (either by being immunized or having had measles in the past) will probably get it.
If you suspect that you or your child may have measles, please call testing facilities or your provider and explain that you or your child have symptoms of measles prior to arrival.
Healthcare providers must report cases, suspected cases, and/or positive laboratory results to their local health department. Please see provider resource documents for more information.
All Warren County residents who are not vaccinated, or unsure if they are vaccinated for measles, should talk to their healthcare provider about vaccination.
Getting vaccinated is the best way to prevent measles.

The facts:
- Measles is very contagious. The measles virus can live for up to two hours in the air after an infected person leaves the room. Nine out of 10 unvaccinated people who are exposed to measles will become infected.
- The measles vaccine provides good protection. One dose of measles-mumps-rubella (MMR) vaccine provides 93% protection against measles and two doses provide 97% protection.
- Exposed individuals who have been fully vaccinated and are at low risk for infection. All exposed individuals will need to monitor for measles symptoms for 21 days.
- If infected, symptoms may not occur right away. Symptoms include high fever, cough, runny nose, watery eyes, and a rash beginning 3-5 days after other symptoms occur. Those experiencing symptoms should avoid contact with others and seek care from a healthcare provider. Notify the provider before arrival that you have a measles concern, so that further spread can be prevented.
- Quarantine is needed for those individuals who were exposed and do not have documentation of vaccination or immunity to measles. People infected with measles can spread it to others, even before they have symptoms.
Vaccination reduces the risk of infection and severe disease. Measles can be serious, and about 1 in 5 people who get infected with measles will be hospitalized with complications such as pneumonia, dehydration, or brain swelling.
All Warren County residents who are not vaccinated, or unsure if they are vaccinated for measles, should talk to their healthcare provider about vaccination.
The Centers for Disease Control and Prevention recommends all children get two doses of MMR vaccine, starting with the first dose at 12 through 15 months of age, and the second dose at 4 through 6 years of age. Teens and adults should also be up to date on their MMR vaccination. Additionally, people 6 months of age and older who will be traveling internationally should be protected against measles.
The MMR vaccine is safe and effective with hundreds of millions of doses given. Contact your health care provider to get vaccinated, or the Warren County Health District at 513-695-1468 or 513-695-1229.
Getting vaccinated is the best way to prevent measles. When you and your family get vaccinated, you help keep yourselves and your community healthy.

What to do if you were exposed to the measles.
There are currently measles outbreaks in multiple states, including Ohio.
You can protect your family with the measles, mumps, and rubella (MMR) vaccine. Everyone 12 months of age and older should be up to date with MMR.
Measles is one of the most contagious diseases and can be dangerous in babies and young children. Learn more about measles and if you are at risk. Visit https://www.cdc.gov/measles/index.html
Frequently Asked Questions
What is measles?
Measles is very contagious and can cause serious illness. Measles is caused by a virus and spreads very
easily when an infected person breathes, coughs or sneezes. Measles spreads so easily that anyone
who is exposed and not immune (either by being immunized or having had measles in the past) will
probably get it.
What are the symptoms of measles?
- Fever
- Runny nose
- Cough
- Pink eye (red, watery eyes)
- Rash all over the body starting on the face and spreading throughout the body
People can spread measles before they show symptoms. Symptoms usually last 7-10 days.
How is measles diagnosed?
Measles is diagnosed by a combination of the patient’s symptoms and by laboratory tests.
When do symptoms start?
It takes an average of 10–12 days from exposure to the first symptom, which is usually fever. The
measles rash doesn’t usually appear until approximately 14 days after exposure, 2–3 days after the
fever begins.
How is measles prevented?
The measles, mumps, and rubella (MMR) vaccine is very safe, effective and the best protection against
measles. Two doses of MMR vaccine are about 97% effective at preventing measles. One dose is about
93% effective.
How serious is measles?
Measles can be a serious disease, with 30% of reported cases experiencing one or more complications.
Death from measles occurs in 2 to 3 per 1,000 reported cases in the United States. Complications from
measles are more common among very young children (younger than five years), adults (older than 20
years), pregnant people, and people with weakened immune systems.
What are possible complications from measles?
Diarrhea is the most common complication of measles (occurring in 8% of cases), especially in young
children. Ear infections occur in 7% of reported cases. Pneumonia, occurring in 6% of reported cases,
accounts for 60% of measles-related deaths. About 1 out of 1,000 cases will develop acute encephalitis,
an inflammation of the brain. This serious complication can lead to permanent brain damage. Measles
during pregnancy increases the risk of premature labor, miscarriage, and low-birth-weight infants,
although birth defects have not been linked to measles exposure.
Measles can be especially severe in persons with compromised immune systems. Measles is more
severe in malnourished children, particularly those with vitamin A deficiency. In developing countries,
the fatality rate may be as high as 25%.
Should pregnant women get the measles vaccine (MMR)?
Pregnant women should not get the MMR vaccine. Pregnant people who need the vaccine should
wait until after giving birth. Women should avoid getting pregnant for four weeks after getting the
MMR vaccine.
Is the measles vaccine safe?
Research has shown that the measles vaccine (MMR) is safe and very effective. Getting vaccinated
is much safer than getting any of the diseases the vaccine protects against.
Are there side effects from the vaccine?
Like any medication, the measles vaccine (MMR) may cause side effects, most of which are mild:
- Pain at the injection site
- Fever
- Mild rash
- Swollen glands in the cheek or neck
Does the MMR vaccine cause autism?
Vaccines do not cause autism. In fact, studies have shown that there is no link between receiving
vaccines and developing autism. Scientists have carefully studied the MMR shot and no studies
have found a link between autism and the MMR vaccine.
What is isolation?
Isolation separates people who are sick with a contagious disease from people who are not sick to
prevent further spread of disease. People who have measles infection, or who are suspected of
having measles infection, must be isolated until 4 days after their rash appeared to prevent
infecting other people. Isolation is an important part of stopping measles spreading in the
community, especially to high-risk people.
What is quarantine?
Quarantine means staying at home and away from daycare/school/work, group and social
activities, sports and recreation events and public places like cinemas and shopping malls.
Quarantine separates people who were exposed to a contagious disease and are in the time period
where they could still get sick from it. People who were exposed to measles may spread measles
to others even before they have symptoms themselves. Quarantine helps prevent measles from
spreading in the community. For measles, quarantine is 21 – 28 days from exposure to a person
with measles
Is school exclusion the same as quarantine?
No. The processes of quarantine and school exclusion are different and administered
separately.
Quarantine is a Health Department requirement that separates and restricts the
movement of people, of any age, who were exposed to a contagious disease and are in the
period where they could still get sick from it. Public health authorities help determine the
need for quarantine and the appropriate dates. For measles, quarantine is 21 -28 days from
exposure to a person with measles.
School Exclusion is a State of Ohio rule that applies to School Districts that requires
their individual K-12 schools to exclude unvaccinated students from school for 21 days from
the last reported case of measles in that school. The exclusion period is done for the
protection of the unvaccinated student, is required by the State of Ohio, and is not optional
for the school or the students. School exclusion does not apply to unvaccinated staff or
faculty, but the quarantine period does apply. It should be noted that if there are multiple
cases of the measles at a particular school, the student’s exclusion might be significantly
extended beyond 21 days, since the 21-day time period would reset with the identification of
each individual new case. When a student is excluded from school, this exclusion also
includes all before and after school activities including childcare, clubs, and sports.
What should I do if I’m unsure whether I’m immune to measles?
If you’re unsure whether you’re immune to measles, you should first try to find your
vaccination records or documentation of measles immunity. If you are not able to locate you
records, you may receive a dose of MMR if you are not currently required to quarantine and do
not have a contraindication to vaccination with a live virus vaccine (such as pregnancy or a
severe immune disorder). Another option is to have a doctor test your blood to determine
whether you’re immune, but this option is likely to cost more and it may take some time to
get the result.
How can I locate my immunization records?
Contact your health care provider regarding your past immunization history. Schools,
colleges, prior employers, or the military (if you were enlisted) may also have records of your
immunization history. If you are, or have been, pregnant your obstetrician’s office may have
also tested you for immunity to measles when they tested you for immunity to rubella. You
may also be included in your state’s immunization registry. Please visit the CDC website for
additional suggestions on how to locate your vaccination records:
http://www.cdc.gov/vaccines/adults/vaccination-records.html
Who needs the measles vaccine (MMR)?
Everyone should be vaccinated with the MMR vaccine.
Children – Children should receive two doses of MMR vaccine, starting with the first dose at
12-15 months of age and the second dose at 4-6 years of age or at least 28 days following the
first dose.
Students at Post-High School Educational Institutions – Students at post-high school
educational institutions without evidence of measles immunity need two doses of MMR
vaccine with the second dose administered no earlier than 28 days after the first dose.
Adults – People who were born after 1957 who do not have evidence of immunity against
measles should get at least one dose of MMR vaccine.
International Travelers – People 6 months of age or older who will be traveling
internationally should be protected against measles.
Who is at risk of measles?
Anyone who has not been immunized or had measles in the past is at risk. Babies younger
than 12 months are at risk because they are too young to have been vaccinated.
How do I protect my baby who is under 12 months old?
Newborns have some natural immunity from their mothers, if the mother was vaccinated, for
the first few months of their life. If parents or caregivers have not gotten the MMR vaccine or
had measles in the past, they should get vaccinated. It is important to make sure people who
are around your new baby do not expose your baby to measles.
What if someone in my family has measles?
They should stay isolated from you and others for 4 days after their rash first appeared. It is
best to limit contact with others in your household and all family members should review
their immune status.
Is there a treatment for measles?
There is no specific treatment for measles. People with measles need bed rest, fluids, and
control of fever. Patients with complications may need treatment specific to their problem.
How long is a person with measles contagious?
Measles is highly contagious and can be transmitted from 4 days before the rash becomes
visible to 4 days after the rash appears.
Can someone get measles more than once?
No