Report a side effect to a vaccine: consumers

Everyone who witnesses or experiences a side effect (adverse reaction) following immunization is strongly encouraged to report it. You may ask your health care provider (doctor, health care provider, pharmacist) to help you.

Report a side effect

To mail your report to a Canada Vigilance Regional Office, use the postage paid label.

What is a vaccine

Vaccines are products that produce immunity to a specific disease. Most vaccines are given by injection (needle) but some are given orally (by mouth) or nasally (sprayed into the nose).

They protect people against serious and potentially deadly diseases, such as diphtheria, measles, polio and tetanus.

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