Wards remain closed after deaths at bug-hit Royal Alexandra Hospital
Eight wards remain closed at a hospital in Renfrewshire following the deaths of four patients who were being treated for a diarrhoea and vomiting bug.
A total of 24 patients are showing symptoms of Norovirus at the Royal Alexandra Hospital in Paisley.
NHS Greater Glasgow and Clyde has also closed a further three wards at two other hospitals.
The health board said the deaths, which had all taken place since Friday, were due to underlying medical conditions.
Norovirus was a contributory factor in one death.
A total of 11 wards were closed to new patients across the NHS Greater Glasgow and Clyde area.
Two wards are shut at Glasgow Royal Infirmary, where four patients are showing symptoms of Norovirus.
At the Victoria Infirmary one patient is affected, with one ward closed.
The health board said strict infection control procedures remained in place at all three hospitals.
NHS Greater Glasgow and Clyde consultant microbiologist Dr Teresa Inkster said: "Norovirus is a particularly prevalent virus common in the community and healthcare settings.
"Typically it has a sudden onset and can spread quickly, and therefore we would urge relatives and any visitors who have experienced any symptoms of diarrhoea or vomiting within the last 48 hours not to visit the hospital.
"We would also ask that visitors are restricted to close family and friends whenever possible due to the current situation."