Britain's Prince Charles is to take a break from commitments to fight off a persistent chest infection, dpa cited his spokesman as saying today. The 61-year-old heir to the throne would take time off and had cancelled engagements for three days from next Monday in Britain, including the annual Royal Ascot horse racing event. "The Prince has been suffering from a persistent chest infection for over a month and doctors have advised him to find a number of consecutive days in which to have a complete rest," said a spokesman for Clarence House.