Select a category from the dropdown menu to browse frequently asked questions by topic, or search the entire FAQ or a specific category by keyword.

Is it safe to get vaccinated if?

Is it safe for I or my child to get vaccinated when we are sick? Should we stay home from the vaccination appointment?
I am immunocompromised. Is it safe for me to get vaccinated?
I have a chronic disease. Is it safe for me to get vaccinated?
Is it safe to repeat vaccines? I can’t find my vaccination record.

Do vaccines cause that?

Do vaccines cause chronic illness or other long-term health problems?
Can vaccines cause autism?
Can vaccines cause SIDS?
Do vaccines cause asthma and allergic diseases?
Do vaccines cause autoimmune diseases like diabetes and multiple sclerosis (MS)?
Can getting multiple vaccines at the same time overwhelm my baby's immune system?
Can a vaccine give me or my child the disease it’s supposed to prevent?

Vaccine side effects & reactions

How do I report an adverse event (a serious or unexpected side effect or medical event) following vaccination?
Can vaccines cause side effects?
Where can I find information on vaccine side effects?
What should I do if I or my child have an unexpected or serious reaction to a vaccine?
Where can I report an adverse event (unexpected or serious vaccine reaction)?
If someone has a bad reaction to a previous dose of a vaccine, can they be vaccinated again?

Other questions about vaccine safety

I want to separate the antigens in a combination vaccine. How do I know if another vaccine option is available? Can I choose the vaccine brand?
How long does it take for a vaccine to be tested and approved for use in Canada?
How do we know vaccines are safe?
Is it safe to get more than one vaccine in the same limb (arm or leg)?
Does Canada have a vaccine injury support program?
Is getting the vaccine riskier than getting the disease?
Is it safe for my child to get more than one vaccine at the same time?
Are combination vaccines safe?
My child accidentally got an extra dose of vaccine. Is this harmful?