Duke of Edinburgh spends second night in Hospital
The Prince has canceled engagements including attending a memorial service for Everest conqueror Sir Edmund Hillary.
The official word from Buckingham Palace is this is just a precaution. Professor John Cunningham is providing The Prince's treatment.
Dr John Moore Gillan, a lung specialist at St Bart's and the Royal London Hospitals, told the BBC "Whenever people hear that someone has been admitted to hospital, particularly when they're in their mid 80s, it's understandable that they are concerned.
"But the overwhelming majority of people with chest infections are going to make a rapid and complete recovery and that is particularly the case when they are generally fit and healthy for their age."