Immunization Coverage Surveillance Archive

This page contains PHO’s previously released immunization coverage reports in Ontario for school pupils and routine infant/childhood programs since the 2013/14 school year.

Past Reports and Supporting Resources

Event

PHO Rounds: The Return of Measles: Lessons from Canada’s Largest Outbreak in Decades

This PHO Rounds will describe the epidemiology and transmission patterns of Canada’s largest measles outbreak in decades and examine factors that shaped its trajectory, including heterogeneous population immunity and the concentration of transmission within specific communities. 

See the Event Details
Updated 5 Aug 2025