Four wards at a West Midlands hospital have been closed to new admissions because of an outbreak of norovirus.
Visiting has been restricted on all wards at Good Hope Hospital in Sutton Coldfield with only persons being allowed to visit a patient each day.
The hospital urged people to call in advance to check a ward's opening times.
Heart of England NHS Foundation Trust said visiting was also restricted at its Solihull and Heartlands hospitals.
A spokesperson said: "We've seen a huge amount of people coming in during the Christmas period, some showing signs of norovirus.
"As a precaution, we have restricted visiting at all of our three hospitals.
"We're also advising that no children under 12 should visit the hospitals."
The spokesperson could not say when the four wards would reopen to new admissions.