Prince Charles has tested positive for COVID-19 after experiencing “mild symptoms.”  The 71-year-old was tested on Monday and the results came back on Tuesday night. His 72-year-old wife Camila, the Duchess of Cornwall, has tested negative. The two of them are self-isolating at Balmoral in Scotland. Clarence House issued a statement that the heir to the British throne “remains in good health and has been working from home throughout the last few days as usual.” They were tested by the National Health Service in Aberdeenshire “where they met the criteria required for testing.”

It is unknown how the Prince of Wales got the virus due to his various previous engagements.

Queen Elizabeth II last saw her son on March 12 and “remains in good health,” according to a Buckingham Palace spokeswoman. She is “is following all the appropriate advice with regard to her welfare.” A source estimates that Prince Charles would have been contagious on March 13 at the earliest.