Britain's Prince Philip is continuing to make progress and respond well to treatment for the recurrence of a bladder infection, Buckingham Palace said Friday. Philip, the husband of Queen Elizabeth II, was admitted to Aberdeen Royal Infirmary in Scotland on Wednesday. Doctors have suggested the Duke of Edinburgh gets some rest, so there will be no visitors Friday, palace officials said, but the family are in constant touch with him by telephone. The 91-year-old, who first suffered the problem in June, fell ill again as he was staying at the royal residence in Balmoral, Scotland, where the queen traditionally spends part of the summer, according to a report of CNN. The palace said he had been taken to the hospital as a precautionary measure and was likely to be kept in for several days.