Seasonal Respiratory Viruses Information for Health Professionals

Health care providers have a critical role to play to reduce the spread and severity of seasonal respiratory viruses in the community, including COVID-19, influenza and RSV. Toronto Public Health (TPH) works with health care providers to apply effective public health strategies to prevent infection, reduce transmission, and manage outbreaks.

This page contains information relevant to all seasonal respiratory viruses including:

  • Clinical signs and symptoms
  • Surveillance
  • Laboratory Testing
  • IPAC
  • Reporting
  • Patient Resources

For specific information on vaccines, prevention, treatment and more, see:

It can be difficult to distinguish between signs and symptoms of seasonal respiratory viruses like influenza, COVID-19 and RSV.

Common symptoms include:

  • Fever or feeling feverish/having chills
  • Cough
  • Shortness of breath or difficulty breathing
  • Sore throat
  • Fatigue
  • Headache
  • Runny or congested nose
  • Myalgias
  • Decrease in appetite
  • Nausea and vomiting (more common in children than adults)
  • Diarrhea (more common in children with flu but can occur in any age with COVID-19)
  • Change in or loss of taste or smell (more common with COVID-19)

In very young infants with RSV, the only symptoms may be irritability, decreased activity, and breathing difficulties.

Toronto Public Health (TPH)’s Integrated Respiratory Diseases Dashboard

  • A weekly summary of Toronto case and institutional outbreak activity for influenza, COVID-19, RSV, and other seasonal respiratory viruses.

Public Health Ontario (PHO)’s Respiratory Virus Tool

  • A tool that provides comprehensive weekly epidemiological information of respiratory virus activity in Ontario, including COVID-19, influenza, and other respiratory viruses.

Government of Canada’s Respiratory Virus Detections in Canada

  • A weekly respiratory virus detection surveillance system that collects data from select laboratories across Canada on the number of tests performed and the number of tests positive for influenza and other respiratory viruses.

Routine Practices are required for ALL clinical interactions, independent of any concern for the possibility of COVID-19, influenza, RSV or other transmissible infectious diseases.

When caring for people with respiratory illness, follow Public Health Ontario’s Interim Infection Prevention and Control Measures Based on Respiratory Virus Transmission Risk in Health Care Settings (revised April 2025).

The recommended personal protective equipment (PPE) when providing direct care to patients/residents with suspect or confirmed ARI includes a medical mask*, isolation gown, gloves, and eye protection.

*A non-fit tested N95 respirator (or equivalent) is considered an alternative to a medical mask.

For more information on PPE Recommendations in Health Care Settings, see Best Practices for the Prevention of Acute Respiratory Infection Transmission in All Health Care Settings.

Additional Resources

  • Report respiratory infection outbreaks in institutions and public hospitals to TPH.
  • Probable and confirmed cases of COVID-19 and/or cases of influenza are reportable to TPH. Cases of RSV are NOT reportable to TPH.
  • To report:
    • Call 416-392-7411 during business hours (Monday to Friday 8:30 am – 4:30 pm)
    • 311 after hours, weekends and statutory holidays (416-392-2489 for callers outside of Toronto)
    • OR fax 416-392-0047

    Note: Long-term care homes and retirement homes can also report respiratory outbreaks by email to LRCT@toronto.ca during business hours.

    Health Care Providers:

    Patients: