Vaccine Safety Surveillance Tool

Use this interactive tool to explore and download vaccine safety surveillance data in Ontario.

Click the tabs below to view selected adverse events following immunization (AEFI) data by trends over time, age and sex, public health unit, type of vaccine and type of adverse event. Within each tab, use the filters to interact with the chart or graph.

An AEFI (adverse events following immunization) is an unwanted or unexpected health effect that happens after someone receives a vaccine. An AEFI may or may not be caused by the vaccine.

New Features

  • More public health-unit level data
  • Enhanced visuals to facilitate public health unit comparisons
  • Adverse event rates for each routine, publicly-funded vaccine

Supporting Resources

This is a supplement to PHO's Annual Report on Vaccine Safety in Ontario.

To obtain or inquire about an immunization record, or for general immunization information, please contact your local public health unit.

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Immunization and Vaccine-Preventable Diseases

Updated 7 Nov 2019