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
See the Event Details
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.
Updated
5 Aug 2025
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