Influenza (Flu)

What is influenza?

Influenza is a contagious disease caused by influenza viruses that infect the respiratory tract (nose, throat, and lungs). It can cause mild to severe illness, sometimes leading to death. Influenza symptoms often begin suddenly, with fever, headache, tiredness, dry cough, sore throat, nasal congestion and body aches. The best way to prevent influenza is to get vaccinated each year.


The best ways to prevent the flu


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Additional Info Group

Last Revised: October 4, 2018