Health chiefs say a norovirus outbreak is leading to 'exceptional pressure' at hospitals across Cardiff and the Vale of Glamorgan.
For the second time this week, the Cardiff and Vale heath board has extended its ban on all visitors at most of its sites across the region.
Restrictions were imposed a week ago following a 'significant' increase in cases.
The ban affects both Barry and Llandough hospitals, including the mental health unit at Hafan y Coed, but it does not affect outpatient appointments.
The Noah's Ark Children's Hospital at UHW in Cardiff is still allowing visitors, with exemptions being made elsewhere for birthing partners and patients who are critically ill or receiving end of life care.
A CAVUHB spokesperson said on Friday: "The impact of the Norovirus outbreak continues to affect a number of wards which is causing exceptional pressure on the system."
"As a result of this challenging position, we have made the difficult decision to continue a No Visiting policy. Again, this is not a decision we have taken lightly, but one that is imperative to protect our patients, staff and visitors and reduce the spread of infection."
The health board says it will review restrictions again next week "if the situation has improved".

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