09:42AM, Monday 04 March 2013
The Queen is spending a second day in hospital after showing signs of gastroenteritis.
She began to show symptoms of the illness, which strikes thousands of people every winter, on Friday. A trip to Swansea to see the St David's Day military ceremony on Saturday had to be cancelled.
The Queen was well enough on Sunday to present a medal to long serving member of staff at Windsor Castle Janet Doel, before being taken by car to London's King Edward VII Hospital.
She is expected to spend a second day there today, while tests are carried to check that there are not any underlying causes for the illness.
Usually gastroenteritis clears up in two days. But it can cause dehydration. This is usually curable by the patient drinking plenty of fluid, although in more extreme cases they can be put on a drip.
Buckingham Palace has emphasised that the Queen, 86, is in 'good health' and that the stay in hospital is simply a precaution.
She was last in hospital 10 years ago when she underwent an operation on her knee at King Edward.
The Queen had been due to spend two days in Rome with the Duke of Edinburgh next weekend, at the invitation of Italy's President Giorgio Napolitano. But this may now have to be re-scheduled.
A reception at Buckingham Palace tomorrow for MPs and MEPs will go ahead with other members of the royal family present.
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