Measles

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General Information

Measles is a respiratory disease caused by a virus that can spread through the air by breathing, coughing, or sneezing. The disease is also called rubeola is easily spread from person to person. Measles causes fever, runny nose, cough, and a rash all over the body. The rash usually begins on a person’s face and spreads down to the neck, trunk, arms, legs, and feet. When the rash appears, a person’s fever may rise to more than 104° Fahrenheit.


The United States is currently experiencing the largest number of reported cases since 1994 and since measles was declared eliminated in 2000. To find information on where cases and outbreaks in the United States are occurring, please visit federal CDC’s measles cases and outbreaks page.

Measles Exposure Information

Posted July 27, 2019:

The greater Montreal area reported cases of measles since June 2019. Contagious individuals visited several public places and the Quebec health department posted a table of locations with dates and times where exposure to the measles virus may have occurred. Maine residents who visited Montreal area since June 2019 are encouraged to visit the Quebec health department website and contact Maine Center for Disease Control and Prevention if they had an exposure.

Visit the Quebec health deparment's measles website to see the list of exposure locations and to learn more: https://www.quebec.ca/en/health/health-issues/a-z/measles/measles-outbreak/.

Signs and Symptomsmeasles infographic

Signs and symptoms of measles usually appear about 7 to 14 days after a person is infected. Measles usually begins with:

  • High fever
  • Cough
  • Runny nose (coryza)
  • Red, watery eyes (conjunctivitis)

Two or three days after signs and symptoms begin, tiny white spots (Koplik spots) may appear inside the mouth.
Three to five days after symptoms begin, a rash breaks out. It usually begins as flat red spots that appear on the face along the hairline and spread downward to the neck, trunk, arms, legs, and feet. Small raised bumps may also appear on top of the flat red spots. When the rash begins, a fever may spike to more than 104  Fahrenheit.

Spread of Measles

Measles is a very contagious virus that lives in the nose and throat of an infected person. The main way that measles spreads is by coughing or sneezing. Measles virus can also live on surfaces in in the air where an infected person coughed or sneezed for up to two hours. Up to 9 out of every 10 people close to a person with measles who are not immune will also become infected.

Measles Complications

Measles can be serious in all age groups. Certain people are more likely to suffer from measles complications including:

  • Children younger than 5 years of age
  • Adults older than 20 years of age
  • Pregnant women
  • People with weak immune systems

Ear infections and diarrhea are common complications from measles. Serious complications include pneumonia and encephalitis and may require hospitalization. Death from measles can occur.

measles can be dangerous.

Measles Vaccination

Measles can be prevented with MMR vaccine, which protects against measles, mumps, and rubella. Two doses of MMR vaccine are about 97% effective at preventing measles; one dose is about 93% effective. Some people who get two doses of MMR vaccine may still get measles if they are exposed to the virus, however the disease is usually milder and they are less likely to spread the disease to others. Vaccination recommendations are:

  • Children: All children should receive two doses of MMR. The first dose should be given at 12 through 15 months of age and the second at 4 through 6 years of age. Children who are 6 through 11 months of age who will be traveling internationally should receive 1 dose of MMR vaccine.
  • Adults: All adults should have proof of immunity to measles. For adults with no evidence of immunity to measles, 1 dose of MMR vaccine is recommended, unless the adult is in a high risk age group (I.e. international travelers, health care workers, and college students), in which case 2 doses of MMR vaccine are recommended. Women are advised to not receive any live virus vaccine during pregnancy, including MMR.

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