Vaccine Safety Surveillance Tool
Use this interactive tool to explore and download vaccine safety surveillance data in Ontario since 2012, including recently added data for 2019.
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 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.
Our infographic provides a visual summary of vaccine safety highlights from 2019.