What is flu?
Flu is a highly infectious disease. The symptoms, that come on very quickly, include fever, chills, headaches, aches and pains in the joints and muscles, and extreme tiredness. For most healthy people, a bad case of flu is worse than a heavy cold usually requiring someone to spend a few days in bed.
However, serious infections, especially in those with underlying health conditions, although less common, can lead to hospitalisation, permanent disability and even be fatal. Find out more about the flu virus in this blog.