Hospitals across the county have been affected by the winter vomiting bug.
Four wards at the Norfolk and Norwich University Hospital have been closed to new admissions while they are tested for the Norovirus, and wards at the James Paget University Hospital in Gorleston and the Queen Elizabeth Hospital in King's Lynn are also affected.
Nick Coveney, director of nursing at the NNUH, said earlier this month: 'At this time of year, we often see levels of norovirus start to increase and our plea to out-patients and visitors is not to come to hospital if they are unwell.
'It is better to telephone and rearrange your hospital appointment or delay your visit until you have been symptom free for two days. Washing your hands before entering and leaving a ward will also help us to reduce infection levels.'
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