London (AFP) – Prince Charles, the eldest son and heir to Queen Elizabeth II, is isolating after testing positive for coronavirus for the second time, his office said on Thursday. The 73-year-old prince also tested positive in March 2020 and spent around a week isolating at the Queen's Balmoral estate in Scotland. His office did not say when he was last in contact with his 95-year-old mother, who herself has had recent health problems that forced her to take a step back from official duties. However, she is once again filling up her diary as a year of celebrations began...