Thirty patients and three members of staff are believed to have contracted the norovirus.
Hospital managers are now urging people to take all the usual measures to stop the problem from getting worse.
Infection Control Manager Elaine Ross explains more:
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Kerrie brings you Saturday's pollen forecast
Kerrie brings you Saturday's forecast
Showers Saturday afternoon & evening could bring torrential downpours, hail & lightning. Risk of localised flooding and longer journey times