Ontario Respiratory Virus Seasonal Summaries (Historical)

This page provides historical summary reports of surveillance information on respiratory virus activity in Ontario for previous respiratory seasons, including case trends, laboratory testing, and outbreaks.

Current respiratory surveillance data are included in the Ontario Respiratory Virus Tool.

Seasonal Summaries


PHO Rounds: Measles outbreaks in Canada: a brief modelling study

This PHO Rounds will describe the results of a brief modelling study that explores the impact of public health interventions such as vaccinations, case and contact management, and their potential impact on measles cases and outbreaks.

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Health Protection


Published 8 Sep 2023