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Ontario Respiratory Pathogen Bulletin

The Ontario Respiratory Pathogen Bulletin (ORPB) is a comprehensive summary of provincial respiratory pathogen activity for the season to date and the most recent surveillance week(s). The bulletin also contains information on the spread and intensity of influenza-like illness in Ontario. The ORPB will be posted every Friday during influenza season (November to May) and on alternate Fridays outside of influenza season.

Download the current report (Weeks 39 & 40 ORPB Week 41 map)

Current highlights

  • Influenza activity in Ontario for Weeks 39 & 40 was similar to Weeks 37 & 38
  • New influenza cases reported for Weeks 39 & 40  (September 25, 2016 – October 8, 2016):  22
  • Total influenza cases reported for the season to date (September 1, 2016 – October 8, 2016): 38
  • Influenza A and influenza B are circulating at low levels.
  • Rhinovirus is currently the dominant circulating respiratory virus.            

Note: The next report (Weeks 41 and 42) will be available October 28, 2016.

Healthcare worker influenza immunization coverage rate data for the 2015-2016 season can be found in the Week 16 ORPB. 

Interactive Graph

Below, you will find an interactive graph that will allow you to view, select and download data from the past three seasons. This graph provides a simple and useful way to compare multiple sets of data. Learn how to use this graph: select the graph you would like to see from the drop-down menu, zoom in, zoom out, scroll bar features, interactive legend and interactive legend, export data. export data, save the graph as an image and annotation.

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Seasonal summaries 
Archived bulletins and reports 

Provincial surveillance reporting
For public health units conducting surveillance monitoring activities, please refer to the following surveillance submission information for the 2016–17 season:

Reports from other jurisdictions

Information about Avian Influenza
For latest information on the status of avian influenza worldwide, please visit the Public Health Agency of Canada.


The Communicable Diseases program area is committed to continuously evaluating and improving our reports to respond to field needs and ensure timely, relevant public health information. For more information or to provide feedback on our services, please contact

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Page updated on [date/time] 21/10/2016 12:59 PM
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