Royal Berkshire Hospital wards closed by norovirus
Visitors to the Royal Berkshire Hospital in Reading have been told to only make essential trips to limit the spread of norovirus.
Four wards out of 34 have been closed on Saturday as a result of the vomiting and diarrhoea bug.
Spokesman Joe Wise said one of the wards should reopen later but that any visitors with infectious symptoms should stay away.
He said: "Visitors are unwittingly bringing the bug in to our patients."
The hospital imposed visitor restrictions at the start of January because after cases of norovirus were confirmed in some of the wards.
Mr Wise said "Anybody who has had the symptoms of vomiting and diarrhoea, please don't come and visit anybody until at least 48 hours after you've got rid of the symptoms because you are still infectious."
It is estimated that between 600,000 and a million people in the UK become infected with norovirus each year.