A ward at Whitby Hospital has been partially closed following the outbreak of the fast spreading sickness bug norovirus.
The Abbey ward is closed to new admissions after the sickness and diarrhoea bug struck earlier this week.
It is believed that the bug has been brought into the hospital by visitors so health bosses have urged people going to see family and friends at Whitby Hospital to think first.
Beverley Proctor, locality manager at Whitby Hospital said: “We are specifically asking people who have been unwell not to visit the hospital until they have been free of symptoms for 48 hours.
“This is really important because the virus is highly infectious. The virus is easily spread by contact with an infected person, especially through their hands.
“Closing wards helps us to contain the virus but visitors can play a large part by staying away if possible.
“If you do visit we ask that you follow guidance, which includes always washing your hands before and after visiting and use the hand sanitizer gel.
“This is to keep the virus contained and to help visitors to keep themselves safe as well as their friends or relatives.”
Four wards have also been affected at Scarborough Hospital.