Information about Measles

Measles is highly contagious. It is an infection that is caused by a virus.


  • Fever
  • Cough
  • Runny nose
  • Red / watery eyes
  • Small white spots appear on the inside of the mouth / throat
  • Blotchy red rash

If you develop symptoms, seek medical care if needed, but call ahead to allow health care staff to manage your case appropriately.

How Measles Spreads

Measles is spread easily through the air or through contact with droplets from the nose and throat of an infected person when they cough or sneeze.

The virus can stay in the air for long periods of time and infect others in the same room or in neighbouring rooms.

Contagious Period and Isolation

Persons infected with measles can spread it to others four days before to four days after the rash appears.

At Risk Individuals

  • Anyone who has not had their age-appropriate vaccines
  • Infants under one year of age
  • Pregnant women who are not immune or adequately vaccinated
  • Severely immune compromised individuals regardless of their vaccination status

More Information

  • Measles - Public Health Canada
  • Photos - Centers for Disease Control
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