In this file photo taken on March 04, 2020 Britain's Prince Charles, Prince of Wales reacts during his visit to the London Transport Museum in London on March 4, 2020, to take part in celebrations to mark 20 years of the museum. Prince Charles, the eldest son and heir to Queen Elizabeth II, has tested positive for the new coronavirus, his office said on March 25, 2020. The 71-year-old is displaying mild symptoms of COVID-19 "but otherwise remains in good health", Clarence House said in a statement. Victoria Jones / POOL / AFP