Immunization protects you from disease.Get protected, get immunized.
COVID-19 vaccines protect against the SARS-CoV-2 virus (also known as COVID-19). The virus causes an infection in the lungs and airways and is a type of respiratory illness. In some cases, the infection can cause problems with other organs or other parts of the body. Go to
ahs.ca/covid to learn more about COVID-19.
The following COVID-19 vaccines are approved for use in Canada:
The Pfizer-BioNTech, Moderna, Janssen, and Novavax vaccines are available in Alberta.
Everyone is at risk of COVID-19. You should get an mRNA COVID-19 vaccine if you're age 5 years or older. COVID-19 vaccines are free.
If you've already had COVID-19, it's not yet known how long your protection will last or how much protection you'll have against variants. It's important to get a COVID-19 vaccine even if you've already had the virus.
The vaccine may give you better protection if you wait a while after having COVID-19 and then get a vaccine. How long to wait depends on your health history and whether or not you've already had doses of COVID-19 vaccine.
If you've had COVID-19 in the past 90 days, check with your healthcare provider about when to get a COVID-19 vaccine.
Consent for a COVID-19 vaccine for children under age 18 years is provided by a parent or guardian. If a parent or guardian can't be at the appointment, they can give consent in writing using the consent form at
In some cases, children under age 18 years may be able to give their own consent.
How well the vaccines work against COVID-19 is different for each variant. COVID-19 vaccines are the best way to lower your risk of getting COVID-19 or getting very sick from it.
The mRNA vaccines give the best protection. The protein-based vaccine gives more protection than the viral vector-based vaccines. However, all the vaccines work very well to lower your risk of getting seriously ill and needing to be in the hospital.
Even if you’ve had a COVID-19 vaccine, it’s still important to follow public health measures to prevent the virus from spreading. Go to
ahs.ca/covid for the most up-to-date information.
You need at least 2 doses of an mRNA COVID-19 vaccine to be considered fully immunized. These doses are called your primary series.
For some people, 2 doses may not give enough protection. You may need a third dose to complete your primary series if you have a health problem that weakens your immune system. For example:
Studies have shown that a third dose may provide better protection to adults with a weak immune system. In children with a weak immune system, a third dose may also provide better protection, but research is still happening to learn more.
If you are age 12 years or older, you can get an extra (booster) dose 5 months after your primary series. A booster dose will give you more protection.
You should get a booster dose if you are age 18 years or older. You should also get a booster dose if you are age 12 to 17 years and you:
A second booster dose is recommended for some people who are at high risk of serious disease. This will provide better and longer protection. You can get a second booster dose if it has been at least 5 months since your first booster dose and you:
alberta.ca/covid19-vaccine to book an appointment for your booster dose.
If you’re travelling outside of Canada, you may be able to get additional doses. This is only if your destination requires you to have a certain COVID-19 vaccine series or a dose within a certain time.
Yes, you can get an mRNA COVID-19 vaccine if you’re pregnant or breastfeeding. Research shows that mRNA vaccines are the safest type of COVID-19 vaccines to get during pregnancy.
When you’re pregnant, you have a higher risk of getting very sick from COVID-19. Getting a COVID-19 vaccine lowers your risk of getting seriously ill from the virus.
If you’re pregnant or breastfeeding and have questions about getting a COVID-19 vaccine, talk to your healthcare provider.
ahs.ca/covidvaccine to find out where and when you can get a COVID-19 vaccine.
There can be side effects from mRNA COVID-19 vaccines, but they tend to be mild and go away in a few days. Side effects may include:
Current information shows that there’s a similar risk of side effects after a first, second, or additional dose of an mRNA COVID-19 vaccine. Research continues to find out more about the risk of side effects after additional doses.
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’ll get medicine to treat the symptoms.
It’s rare to have a serious side effect. Call Health Link at 811 to report any serious or unusual side effects.
There have been very rare reports of myocarditis (inflammation of the heart muscle) and pericarditis (inflammation of the lining around the heart) within 7 days of getting either the Pfizer-BioNTech or the Moderna vaccine. Most reported cases were mild and got better with treatment.
The inflammation can cause shortness of breath, chest pain or pressure, or a very fast or abnormal heart rate. Get medical help
right away if you have any of these symptoms.
These rare events were reported more commonly:
The Pfizer-BioNTech vaccine has a lower risk of myocarditis and pericarditis than the Moderna vaccine, especially for those age 12 to 29 years getting their primary series. Research is still being done to find out more about the risk of these events after a third dose or a booster dose.
Research has shown that children age 5 to 11 years may have a lower risk of these events after their primary series with Pfizer-BioNTech vaccine than people age 12 to 29 years. There’s still more to learn about these risks in children, including the risk of these events after a third dose and the risk after getting Moderna vaccine.
It's not known if having a history of myocarditis or pericarditis puts you at higher risk of these rare events after a COVID-19 vaccine. Talk to your doctor before you get a dose of COVID-19 vaccine if:
Research is happening to learn more about the risks of these rare events.
Your risk of getting seriously ill from COVID-19 is much higher than your risk of having a rare event after these vaccines.
COVID-19 Vaccine Frequently Asked Questions for more information.
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 doctor or pharmacist if you’re not sure what medicine or dose 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.
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.
Here are the recommended vaccines by age group:
If you are age 6 to 29 years, it’s recommended to get the Pfizer-BioNTech vaccine. This vaccine has shown to have a lower risk of myocarditis and pericarditis in people age 12 to 29 years and may have a lower risk for children age 5 to 11 years.
Usually you get the same vaccine for all your doses. If your first-dose vaccine isn’t available or you can’t have it, you can get a different COVID-19 vaccine for your next dose. Whichever vaccine you get to complete your primary series protects you against COVID-19.
Talk to your healthcare provider about which vaccine is best for you.
ahs.ca/seconddose for more information.
You will get an mRNA vaccine for any booster or additional doses. If you are age 12 to 29 years, it’s recommended to get the Pfizer-BioNTech vaccine for your booster dose. There’s more to learn about the risk of myocarditis and pericarditis after getting a booster dose. But with the primary series, we have seen that the Pfizer-BioNTech vaccine has a lower risk of these rare events in those age 12 to 29 years.
If you can’t get or don’t want an mRNA vaccine, you can get the protein-based vaccine if you are age 18 years or older.
The mRNA vaccines are licensed for first booster doses for people age 18 years or older who completed their primary series at least 6 months ago.
In other cases, the vaccine isn’t licensed for more than 2 doses. But vaccine experts support this in certain situations. This is called “off-label use.”
Getting more than 2 doses of a COVID-19 vaccine is off-label use if:
If you get a Moderna vaccine for your first booster dose and you are age 65 years or older, have a weak immune system, or live in a seniors living facility, you will get a higher dose of vaccine. This is also considered off-label use but is supported by vaccine experts.
Talk to your healthcare provider about which vaccine you can get and when to have your doses.
Research has shown mRNA vaccines provide the best protection for people with a weak immune system. For some people with a weak immune system, the Moderna vaccine may provide better protection than the Pfizer-BioNTech vaccine. Talk to your healthcare provider about which vaccine is best for you.
If you’re age 12 years or older, you can get any vaccine at the same time as, any time before, or any time after a COVID-19 vaccine.
Children under age 12 years should wait at least 14 days after getting a COVID-19 vaccine before getting another vaccine. If they got another vaccine first, they should wait 14 days before getting a COVID-19 vaccine. This helps you watch for any side effects from the COVID-19 vaccine. However, if your child needs another vaccine on the same day or within 14 days before or after the COVID-19 vaccine, there are no safety concerns. Both vaccines will still work to protect your child. This may happen if your child is due to have a routine school immunization within 14 days of having the COVID-19 vaccine. Talk to your healthcare provider if you have questions about your child’s vaccine schedule.
You may not be able to get an mRNA COVID-19 vaccine if you:
Always tell your healthcare provider if you have allergies or if you've had a side effect from a vaccine in the past.
Check with your healthcare provider about when you can get an mRNA COVID-19 vaccine if you:
Be sure to talk to your doctor
before you get an mRNA COVID-19 vaccine, if you:
COVID-19 is a new strain of coronavirus that’s caused a worldwide pandemic. The virus causes an infection in the lungs and airways and is a type of respiratory illness. Symptoms may include:
Most people have only mild symptoms or no symptoms at all. But if you’re an older adult or have other health problems, you can get very sick and may need care in a hospital. In serious cases, COVID-19 can cause a type of lung infection called pneumonia. Pneumonia makes it hard to breathe without help and can even lead to death.
COVID-19: How to manage symptoms for a list of all symptoms that may be related to COVID-19.
How does it spread?
It’s important to know that you and others can spread COVID-19 before symptoms start.
ahs.ca/covid to find out more.
How can I prevent COVID-19 from spreading?
To prevent COVID-19 from spreading:
If you think you’ve had contact with COVID-19 or have symptoms, take the COVID-19 Self-Assessment at
Current as of: May 12, 2022
Author: Provincial Immunization Program, Alberta Health Services
This material is not a substitute for the advice of a qualified health professional. This material is intended for general information only and is provided on an "as is", "where is" basis. Although reasonable efforts were made to confirm the accuracy of the information, Alberta Health Services does not make any representation or warranty, express, implied or statutory, as to the accuracy, reliability, completeness, applicability or fitness for a particular purpose of such information. Alberta Health Services expressly disclaims all liability for the use of these materials, and for any claims, actions, demands or suits arising from such use.