Norovirus, also called the "winter vomiting bug", is a stomach bug that causes vomiting and diarrhoea. It can be very unpleasant, but usually goes away in about 2 days.
The main symptoms of norovirus are:
You may also have:
The symptoms start suddenly within 1 to 2 days of being infected.
You can usually treat yourself or your child at home.
The most important thing is to rest and have lots of fluids to avoid dehydration.
You should start to feel better in 2 to 3 days.
Stay off school or work until you have not been sick or had diarrhoea for at least 2 days. This is when you're most infectious.
Do not visit hospitals or care homes during this time.
Norovirus can spread very easily.
You can catch norovirus from:
Washing your hands frequently with soap and water is the best way to stop it spreading. Alcohol hand gels do not kill norovirus.