"He has shown mild symptoms but is otherwise in good health and has been working from home as usual in recent days," the Royal House writes in a statement.

Prince Charles's wife Camilla has also been tested but does not carry the virus. The couple are now in isolation in their house in Scotland.

The Royal House also writes that it is not possible to say how the prince became infected when he had a large number of public commitments in recent weeks.

The head: The queen is fine

Prince Charles is 71 and the oldest child of the soon-to-be 94-year-old Queen Elizabeth.

According to the court, the queen is in good health. She has not met the Crown Prince since March 12.