Dr Ed Cetti, Chief Medical Officer at the trust, said: “Thank you to all those who have supported our services in responding to this outbreak over recent days.
“While we are able to step down the incident, there continues to be a very high number of norovirus cases across our hospital and significant demand in our emergency department.”
People are being asked to consider alternatives to the emergency department while the hospital is still busy and people with norovirus symptoms, including diarrhoea or vomiting in the past 48 hours, are being asked not to go to the site.
The trust advised people should continue to use pharmacies, GP practices, walk-in centres, the NHS App and NHS 111 online or by phone 24/7 for urgent health advice.
Patients should attend outpatient and other hospital appointments unless contacted by the trust to reschedule, it added.