Influenza information for Ontario health care providers


Influenza Activity & Surveillance

The following does not constitute medical advice. If you have a medical question or symptoms of illness, you should consult a physician. This information is being shared for information purposes only as part of a pilot project. Her Majesty the Queen in Right of Ontario as represented by the Minister of Health and Long-Term Care makes no representation or warranty of any kind as to the accuracy, completeness or currency of the information provided. The information is subject to change at any time and without prior notice.

Influenza Activity

Current Provincial Status*


General Notification

Based on the result of this week's risk assessment process, the current provincial status is green. The assessment this week is primarily based on respiratory-related Emergency Department (ED) visits and pneumonia and influenza-like illness (ILI) related admissions.

Last reviewed April 3, 2018
Last updated April 3, 2018

* The provincial status is based on the Ministry of Health and Long-Term Care's review of a number of influenza activity indicators. For information on influenza activity at the public health unit-level, please see the Kingston, Frontenac and Lennox & Addington Public Health Knowledge Management Division's influenza mapper tool.

For more information on the process used to determine the influenza activity level in Ontario, please see the Seasonal Influenza Risk Assessment Process.

Global Influenza Activity Resources

There are a variety of sources that health workers and health sector employers can turn to for information on influenza activity in Ontario, Canada, North America and the world:

Seasonal Influenza Risk Assessment Process

From November to April, the Ministry of Health and Long-Term Care reviews a set of indicators on a weekly basis to assess how the province is progressing through the influenza season. These indicators include data from syndromic and laboratory surveillance systems, as well as health system utilization data.

The ministry is piloting a classification system to describe influenza activity and to support decision-making by health organizations. Over the course of the 2016/2017 influenza season, the classification system will be validated for future improvements. This system describes provincial influenza activity according to a green, yellow, orange and red colour scheme:

Green - Influenza-related activity is at low seasonal levels.

Yellow - Influenza-related activity is at elevated seasonal levels.

Orange - Influenza-related activity is at elevated seasonal levels and may be reaching peak levels this week.

Red - Influenza-related activity is at greatly elevated levels.

For more information about this project, please contact the ministry's Health System Emergency Management Branch by email at or by phone at 1-866-212-2272.

For More Information
For information about flu

Call the ServiceOntario INFOline at 1-877-844-1944
TTY 1-800-387-5559
TTY (Toronto) 416-327-4282
Hours of operation : 8:30am - 5:00pm

To speak with a registered nurse

Visit Telehealth Ontario or call 1-866-797-0000
TTY: 1-866-797-0007
Hours of operation : 24 hours, 7 days a week

To find health care options in your community

Visit or call 1-866-330-6206.

To find a health care provider

If you don't have a health care provider, you can register for the Health Care Connect program. Visit or call 1-800-445-1822.