We can't predict how bad this year's flu season will be but here's what we know so far
- Written by: Sheena G. Sullivan, Epidemiologist, WHO Collaborating Centre for Reference and Research on Influenza
The flu comes on rapidly and symptoms get worse over the first few days.Shutterstock
Influenza illness – or the flu – is a caused by the influenza virus. It often comes on rapidly, with a high fever, chills, muscle aches, tiredness and a dry cough. These symptoms get worse over the first few days.
Most people will get better without...
Read more: We can't predict how bad this year's flu season will be but here's what we know so far