Gastroenteritis

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Gastroenteritis is a very common and infectious illness involving vomiting and diarrhoea. In the UK it is usually caused by a viral infection but can also be caused by bacteria and parasites.

Gastroenteritis means inflammation (swelling and irritation) of the stomach and the intestines (gut). Most attacks clear up without medical treatment, but if you have severe diarrhoea and vomiting you may become dehydrated. This can be particularly serious in babies and the elderly, so medical treatment should be sought immediately if dehydration is suspected.

You should stay away from work, and keep children off school or nursery, for 24 hours after the last episode of diarrhoea or vomiting. As gastroenteritis is very infectious, you should also follow strict hygiene measures including disinfecting toilets after use and regular handwashing.