An adverse event following immunization (AEFI) is an unwanted or unexpected health effect that happens after someone receives a vaccine, which may, or may not, be caused by the vaccine.
In Ontario, health care providers are legally required to report AEFIs to their local public health units. Public health units investigate AEFIs and provide support to immunizers, individuals, and their families.
Fax an AEFI reporting form to HPE Public Health at 613-966-8145.
Email to HPE Public Health at IMMFax2@hpeph.ca.
Learn more with the AEFI Reporting Fact Sheet.
