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Reportable Disease Trends in Ontario

New! Get more information on changes to status and case definitions in Factors affecting reportable diseases in Ontario 1991-2016​ and the Appendix​.

Getting started? For more information on how to best use the features of this tool, view our How-to guide

What’s new?  Learn more about updates made to the tool in our Release notes.

To see information on source data, classifications, citations, definitions and more, see our Technical notes.    

Review summaries for selected diseases from the 2015 release in the 2015 disease summaries archive.           ​

Throughout the year, data are collected on reportable diseases in Ontario, primarily from clinicians, laboratories and hospitals who report it to their local public health unit. PHO analyzes these data, and uploads it to our convenient Reportable Disease Trends tool, which contains over 10 years of data. With this tool, you can search, customize and export information from interactive maps, graphs and tabs, according to your needs. You can also sort according to public health unit or local health integration network (LHIN), as well as demographics to assist with surveillance, program planning and policy decisions.

What's new:

• Local Health Integration Network (LHIN) level data in interactive maps.
• New data for 2016 and refreshed data for 2005-15.
• Interactive graphs and map for Clostridium difficile infection (CDI) outbreaks in hospitals.
• Interactive graphs to present per cent positivity for chlamydia, gonorrhea, influenza and legionellosis.
• A new tab for tuberculosis to present information on drug resistance.

For more information:​

Search or select a disease:


Page last reviewed:
Page last updated: 2018-10-03 3:54 PM
Uncontrolled print copy. Valid only on day of Print: [date]
Page updated on [date/time] 2018-10-03 3:54 PM
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