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 nausea (feeling sick), vomiting (being sick) and diarrhoea. You may also have a headache, temperature above 38C, aching arms and legs. These symptoms will start within 2 days from the onset of the infection.
You can usually treat yourself or your child at home and you should start to feel better in 2 to 3 days. It’s also advised that you stay off school or work until the symptoms have stopped for 2 days. Also avoid visiting anyone in hospital during this time as this is when you're most infectious.
How it’s spread
Norovirus can spread very easily.
You can catch norovirus from close contact with someone with norovirus, touching surfaces or objects that have virus on them, then touching your mouth or eating food that’s been handled by someone with norovirus. Washing your hands frequently with soap and water is the best way to stop it spreading. Alcohol hand gels do not kill norovirus.