Definition 

Flu is a viral infection of the respiratory tract caused by influenza A and B viruses that cause fever, muscle pain and fatigue, and may lead to pneumonia and even death in people whose health is frail. Every year during the flu season, there are many hospitalizations and deaths that could have prevented by vaccination. 

Practical advice

What can you do to prevent or protect yourself?

See the MSSS' "Seasonal flu" page for more information.

Whom should you contact to get help?

You can get vaccinated at your family doctor's office, a clinic that offers vaccination or your CSSS (health and social service centre).