Vaccine Safety

Frequently Asked Questions

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Are there any reasons why someone should not be vaccinated?

• People who have a severe allergy to eggs should not get the flu (influenza) shot or the yellow fever vaccine.
• Any person who has had a serious allergic reaction to a vaccine should not receive that vaccine again.
• People with weak immune systems may not respond to the vaccine or they may have more side effects after they get a vaccine. In some cases, it may still be recommended that people with weak immune systems receive vaccines (for example, the flu vaccine). Ask your doctor, public health nurse or CLSC (Centre local de santé communautaire) what's best for you.
• If you are very sick with a high fever at the time you are supposed to get the vaccine, you should wait until you are better.

Always check with your nurse or doctor before you get any vaccine. They will review your health history and ask you about any conditions you may have. Bring your vaccination record with you. That way they can make sure it is up-to-date.

Where can I get more information?

Vaccine Safety Frequently Asked Questions (FAQs)
Misconceptions about Vaccines and Facts
Vaccine-Preventable Diseases
Along with other resources and information, you can read the Canadian Immunization Guide – Seventh Edition (2006).
Your Child's Best Shot , Canadian Paediatric Society (CPS)

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