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.
You should start to feel better in 2 to 3 days.
Stay off school or work until the symptoms have stopped for 2 days. Also avoid visiting anyone in hospital during this time.
This is when you're most infectious.
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.
Page last reviewed: Fri Apr 2021 Next review due: Fri Apr 2021