Measles is a highly contagious disease that spreads easily to people who are not vaccinated or have not previously had measles. Please note, this information is not intended to replace the advice of a qualified health care provider. Please speak to your physician or nurse practitioner if you have questions.
Unvaccinated young children, unvaccinated pregnant people, and people with weakened immune systems are at increased risk of complications from measles.
Measles symptoms begin 7 to 21 days after being infected and may include:
Vaccination is your best protection against measles
Two doses of measles vaccines are over 97% effective at preventing measles. Check your vaccination record to confirm you and your family members are up to date with measles vaccinations. If you are unsure, you can check with your doctor or health care provider. If your child receives the vaccine, report it to Peel Public Health.
Two doses are recommended for anyone born in 1970 or later. In general, if you were born before 1970 you are considered protected against measles.
If you're traveling to areas where measles is present, make sure you're protected. Get vaccinated before your trip if you're not up to date or have never had measles. For the best protection, get vaccinated at least 2 weeks before travel, but it's still beneficial to get the vaccine any time before you leave.
More information: Measles - peelregion.ca
Updated: March 2025