Seasonal flu
Flu is a common infectious viral illness spread by coughs and sneezes. It can be very unpleasant, but you'll usually begin to feel better within about a week.
The symptoms of flu usually develop within one to three days of becoming infected. Most people will feel better within a week. However, you may have a lingering cough and still feel very tired for a further couple of weeks.
Usually, you can manage flu symptoms yourself at home and there's no need to see a GP. Most people feel better within a week. You can look after yourself at home by resting, keeping warm and drinking plenty of water.
Complications of flu mostly affect people in high-risk groups, such as the elderly, pregnant women and those who have a long-term medical condition or weakened immune system.
There are three main ways of preventing flu: good hygiene, such as handwashing and cleaning, the flu vaccination and antiviral medication.