Norovirus affects five Newport hospital wards
Five wards at two hospitals in Newport have been affected by a winter diarrhoea vomiting bug over the weekend.
Aneurin Bevan Health Board said wards at the Royal Gwent and St Woolos hospitals were affected by norovirus.
Visitors are asked not go onto wards if they have had symptoms during the previous 48 hours or been in close contact with someone with symptoms.
The highly contagious norovirus causes nausea, vomiting and diarrhoea.
The symptoms begin about 12 to 48 hours after infection and usually last for between 12 and 60 hours.
The Royal Gwent Hospital is the area's district general hospital, with about 775 beds, and deals with in-patients, day cases and out-patients.
St Woolos is a community and mental health hospital with five community medicine wards and three mental health wards.