Diseases it protects from

• measles
• mumps
• rubella
• varicella (chickenpox)

Who should get this vaccine

As part of the routine immunization schedule, children get this vaccine starting at age 12 months up to and including 12 years. You do not get this vaccine if you are older than 12 years.

Who should not get this vaccine

Your child may not be able to get this vaccine if:

• They have an allergy to any part of the vaccine.
• They had a severe (serious) or unusual side effect after this vaccine or one like it.
• They have a weak immune system (because of a medicine or a health problem).
• They have a family history of a weak immune system.
• They had a blood product in the past 11 months.
• They had another live vaccine in the past 3 months.
• They have seizures or a family history of seizures.
• They had an organ or stem cell transplant.
• They are pregnant.

If your child has allergies or has had a side effect from this vaccine in the past, check with your child’s doctor or a public health nurse before they get the vaccine.

Although your child can get the vaccine if they have a mild illness such as a cold or fever, they should stay home until they are feeling better to prevent spreading their illness to others.

Doses

Children need 2 doses. As of January 1, 2021, children can get their first dose at age 12 months and their second dose at age 18 months. If your child did not get an MMR-Var vaccine at age 18 months, they can get it at age 4 years.

Other vaccines that protect against the same diseases

The MMR vaccine protects against measles, mumps, and rubella.

The varicella vaccine protects against varicella.

Get the vaccine

You can get the vaccine at your local public health or community health centre.

How well it works

After 2 doses, protection is about:

• 100% for measles
• 76% to 95% for mumps
• 95% for rubella
• 98% for varicella

Safety

Vaccine safety is a top priority. Canada uses extremely safe vaccines. Learn more about vaccine safety in Canada, including how vaccines are monitored for continued safety, and ingredients in vaccines.

Side effects

There can be side effects from the MMR-Var vaccine. They tend to be mild and go away in a few days, but side effects can happen up to 6 weeks after having this vaccine. They may include:

• redness, swelling, bruising, rash, or feeling sore where you had the needle
• getting upset easily
• a fever
• vomiting (throwing up) or loose stool (diarrhea)
• a measles-like rash (a blotchy, red rash), rubella-like rash (rash with red, raised bumps), or varicella-like rash (rash with water-filled blisters)

At least 1 out of 100 people who got this vaccine reported 1 or more of these side effects. In some cases, it is unknown if the vaccine caused these side effects.

It is important to stay at the clinic for 15 minutes after your vaccine. Some people may have a rare but serious allergic reaction called anaphylaxis. If anaphylaxis happens, you will get medicine to treat the symptoms.

It is rare to have a serious side effect after a vaccine. Call Health Link at 811 to report any serious or unusual side effects.

How to manage side effects

• To help with soreness and swelling, put a cool, wet cloth over the area where you had the needle.
• There is medicine to help with a fever or pain. Check with your child’s doctor or pharmacist if you're not sure what medicine or dose to give. Follow the directions on the package.
• Children under the age of 18 years should not take aspirin for 6 weeks after getting a vaccine that protects against varicella (unless your doctor has told you to take it) because it can cause serious health problems.
• If your child gets a rash that looks like varicella, keep it covered. If you cannot cover your child’s rash, keep them away from anyone who is pregnant, newborn babies, and people with weak immune systems. If your child has more than 50 spots, call Health Link at 811.
• Some people with health problems, such as a weak immune system, must call their doctor if they get a fever. If you have been told to do this, call your child’s doctor even if you think the fever is from the vaccine.

There can be mild, short-term side effects after getting a vaccine. Find tips to manage these side effects at home.