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Duke of Edinburgh still not allowed visitors in hospital

18 August 2012 Last updated at 19:55 BST

The Duke of Edinburgh has spent a fourth day at Aberdeen Royal Infirmary, where he is being treated for the recurrence of a bladder infection.

He has been advised to rest and hasn't had any visitors.

The BBC's Lorna Gordon, who is at the Aberdeen Royal Infirmary, said the Queen had been looking ''reassuringly relaxed''.