Norovirus causes vomiting and diarrhoea. It is a virus and antibiotics will not kill it.
Norovirus symptoms include nausea, diarrhoea and vomiting. You may also have a temperature (fever), headache and aching arms and legs.
Symptoms usually start within one or two days of being infected. They can usually be managed at home and should disappear after a few days although you will remain contagious for up to 72 hours after your last symptoms.
You can catch norovirus easily from other people, by touching surfaces they have touched or eating food they have prepared.
Swansea Bay University Health Board infection prevention and control matron Joanne Walters is urging the public to help control the spread of norovirus, which is very easily passed from person to person.
Make sure to wash your hands:
If you have sickness and diarrhoea, it usually passes in a few days.
We are urging people to manage their symptoms at home with over-the-counter medicines such as paracetamol and by maintaining hydration by having small, regular amounts of fluid, preferably water or rehydration remedies.
We are urging people who have it to stay away from hospitals and other busy, communal areas like supermarkets if you are unwell (or caring for someone with the bug), even if the symptoms are mild or abating, for at least 48 but up to 72 hours.
During an outbreak of norovirus, wards at Morriston Hospital, Singleton Hospital, Gorseinon Hospital and Neath Port Talbot Hospital may be affected. For more information on ward closures, go to this page.