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Measles, mumps, rubella, varicella (MMR-Var) vaccine


​​​​​​​​​​Immunization protects you from disease.
​​Get protected, get immunized.

  • Vaccines make your immune system stronger. They build antibodies to help prevent diseases.
  • Immunization is safe. It's much safer to get immunized than to get this disease.​

What is the MMR-Var vaccine?

The MMR-Var vaccine protects against measles, mumps, rubella, and varicella (chickenpox).

Who should have the MMR-Var vaccine?

Children who are age 12 years and younger get this vaccine. Children get it starting at age 12 months. Younger babies who are age 9 to 11 months and going to have an organ transplant may also get this vaccine.

People older than 12 years don’t get this vaccine.

How many doses do I need?

Children need 2 doses. As of January 1, 2021, children get their first dose at age 12 months and the second dose at age 18 months.

If your child didn’t get an MMR-Var vaccine at age 18 months, they’ll get it at age 4 years.

Are there other vaccines that protect against measles, mumps, rubella, and varicella?

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

How well does the vaccine work?

After 2 doses, protection is estimated to be:

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

Where can I get the MMR-Var vaccine?

You can get the vaccine at a public health office in your area.

Are there side effects from the MMR-Var vaccine?

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
  • fever
  • vomiting or loose stool (diarrhea)
  • measles-like rash (blotchy, red), rubella-like rash (red, raised bumps), or chickenpox-like rash (water-filled blisters)

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

How can I 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 fever or pain. Check with your doctor or pharmacist if you’re not sure what medicine or dosage to take. Follow the directions on the package.
  • Children under the age of 18 years should not take aspirin because it can cause serious health problems.
  • If you get a rash that looks like chickenpox, keep it covered. If you can’t cover the rash, stay away from pregnant people, newborn babies, and people with weak immune systems. If you have 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’ve been told to do this, call your doctor even if you think the fever is from the vaccine.

Who should not have the MMR-Var vaccine?

You may not be able to have the vaccine if you:

  • have an allergy to parts of the vaccine
  • had a severe or unusual side effect after this vaccine or one like it
  • have a weak immune system (because of medicine you take or a health problem) or a family history of a weak immune system
  • had a blood product in the past 12 months
  • had another live vaccine in the past 3 months
  • have seizures or a family history of seizures
  • are pregnant

Check with your doctor or a public health nurse before you get the vaccine.

You can still have the vaccine if you have a mild illness such as a cold or fever. Always tell your healthcare provider if you have allergies or if you have had a side effect from a vaccine in the past.

Facts about measles, mumps, rubella, and varicella (chickenpox)

What is measles?
Measles is a virus that spreads easily through the air when someone who has measles coughs or sneezes. It can cause:

  • a high fever
  • cough
  • runny nose
  • red eyes
  • a blotchy, red rash

Measles can be dangerous because:

  • One in 10 people with measles will get middle ear or lungs infections
  • One in 1,000 people will get encephalitis (infection of the brain), which can lead to seizures, deafness, or brain damage
  • One to 2 of every 1,000 people with measles could die

Go to the measles page on to find out more.

What is mumps?
Mumps is a virus that spreads by coughing, sneezing, or contact with saliva (such as kissing or sharing toys). You can have no symptoms but still spread mumps. It can cause:

  • fever
  • headache
  • swelling of the glands around your jaw
  • swelling of the testicles or ovaries
  • deafness
  • encephalitis (infection of the brain)

Go to the mumps page on to find out more.

What is rubella?
Rubella is a virus that spreads by coughing or sneezing. It’s usually mild. It can cause:

  • fever
  • sore throat
  • swollen neck glands
  • rash with red, raised bumps
  • painful, swollen joints
  • encephalitis (infection of the brain)
  • a bleeding disorder

If you get rubella while you’re pregnant, it can cause a miscarriage or the baby may be born with disabilities.

Go to the rubella page on to find out more.

What is varicella (Chickenpox)?
Chickenpox is a virus that can cause a fever and an itchy rash that looks like small water-filled blisters. It spreads easily through the air by coughing, sneezing, or touching open blisters.

It’s usually mild, but can be more serious in newborns, adults, and people with weak immune systems. Up to 1 in 10 people who get chickenpox can have:

  • skin infections
  • pneumonia
  • blood infections
  • other life-threatening infections

Go to the chickenpox (varicella) page on to find out more.

More information

Current as of: January 1, 2021

Author: Provincial Immunization Program, Alberta Health Services