Symptoms of Flu

Typical flu symptoms include: a sudden onset of high fever with chills, headache, aching muscles, weakness and sometimes a cough and sore throat.¹

Many people confuse flu with a heavy cold; however, flu tends to be more severe than the common cold, which is caused by other respiratory viruses such as rhinovirus.² Flu is very draining and you’ll probably have to go to bed. The infection lasts for around seven days.³

Following flu infection, many people feel tired and unwell for several weeks. Serious complications of flu include bronchitis and secondary bacterial pneumonia.²