Norovirus, better known as the winter vomiting bug, is the most common stomach bug in the UK, affecting people of all ages.
The virus, which is highly contagious, causes vomiting and diarrhoea. As there is no specific cure, you have to let it run its course, but it should not last more than a couple of days. If you get norovirus, make sure you drink plenty of fluids to avoid dehydration and practise good hygiene to help prevent it from spreading.
Norovirus can be unpleasant to experience, but it's not generally dangerous and most people make a full recovery within a couple of days, without having to see a doctor.
Noroviruses are a group of viruses that are the most common cause of stomach bugs (gastroenteritis) in the UK. They are also known as small round structured viruses (SRSV) or Norwalk-like viruses.
Between 600,000 and 1 million people in the UK catch norovirus every year. You may have heard of it as the “winter vomiting bug” because the illness is more common in winter. However, the virus can be caught at any time of the year.
Read more about Norovirus, including the symptoms, prevention and treatment on the NHS Choices website.