Norovirus is a virus that causes vomiting and diarrhea in all ages. Outbreaks are common in child care centres and schools.
After someone is exposed to norovirus, it takes a day or two for the signs to appear. The child may have an upset stomach and start vomiting, often followed by diarrhea. Other signs include cramping, chills or mild fever. The illness usually begins suddenly and lasts for one to three days. Complications and severe illness are rare.
It is important to drink plenty of fluids to prevent dehydration.
There is no medicine to treat norovirus. People get better on their own within a few days.
Norovirus can be spread if people with the virus do not wash their hands after going to the toilet or if someone with the illness handles food and drinks and has not washed their hands.
Norovirus can be spread to the environment, including sink, taps, counters and toys. People can become ill when they touch these surfaces and put their hands in their mouths.
Even when diarrhea and vomiting have stopped, the virus can still be in the bowel movements.