Managers at Lynn’s Queen Elizabeth Hospital have pleaded for visitors to take additional precautions following an unusually late outbreak of norovirus.
A surge of cases of the bug, which is commonly known as the winter vomiting virus, has been recorded at the Gayton Road site.
And officials are now asking people who have had symptoms of vomiting or diarrhoea in the last 48 hours to stay away.
Visitors are also being urged not to bring their own food onto the site for patients.
Dr Ian Hosein, the hospital’s interim associate medical director for infection prevention and control, said: “This indicates a second surge and it is important to empthasise that this is principally a food born infection.
“I would ask visitors not to bring self-prepared food items into hospital as these items could be contaminated and put patients at risk of getting Norovirus infection.
“This can result in ward closure which puts the hospital under further pressure.”