Noroviruses are part of a group of viruses that are the most common cause of gastroenteritis (stomach bugs) in the UK. Noroviruses are sometimes known as a 'small round structured viruses' (SRSV), or 'Norwalk-like viruses'. Noroviruses are also called the 'winter vomiting disease' because people tend to get them during the winter months. However, they can occur at any time of the year.

How noroviruses are spread

It is estimated that the norovirus affects between 600,000 and 1 million people in the UK every year. Outbreaks of the illness are common, particularly within contained environments, such as hospitals, nursing homes, and schools. This is because the norovirus spreads very easily from person to person, and the virus can survive for several days in a contaminated area.

The norovirus can be spread through contact with an infected person, through contact with surfaces, or objects, that are contaminated with the virus, or by eating contaminated food or water.

There are many different types of norovirus, and it is possible for infection to occur to several times. This is because after getting the illness, immunity to the virus only lasts for fourteen weeks. However, having recurring bouts of the norovirus may provide some protection from future infection.

For further information visit the website for NHS Direct, telephone them on 0845 4647 or contact your own GP.

The file below contains  i nformation from the North West London Health Protection Agency for parents caring for children with influenza or winter vomitting disease.