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Living > Public Health, Safety

Adverse Events Following Immunization (AEFI)

Who should report?

  • All vaccine providers
  • All health care professionals caring for patients who may have had an AEFI
  • All vaccine manufacturers to whom an AEFI report is submitted

Why should you report?

  • It is a health care professional's responsibility
  • To ensure that the vaccines used in Canada are safe
  • To maintain public confidence in Canada's immunization programs

AEFI should be reported when the event:

  • Has a temporal association with a vaccine
  • Has no other clear cause at the time of reporting
  • Is of a serious nature (i.e. life threatening, death, hospitalization)
  • Requires urgent medical attention
  • Is unusual or unexpected

If there is any doubt as to whether or not an event should be reported, a conservative approach should be taken and the event should be reported.

Complete the Adverse Events Following Immunization Reporting Form now.

For further information, please call the Vaccine Preventable Disease Program at 905-688-8248 or 1-888-505-6074 ext. 7396.


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