The Prince of Wales, the apparent heir to the British throne as Elizabeth II’s eldest son, Prince Charles has tested positive for coronavirus, Clarence House confirmed.

According to the BBC, the 71-year-old royal shows mild symptoms “but is otherwise in good health,” a spokesman said. His wife, Camilla Parker Bowles, 72, the Duchess of Cornwall, has also been examined but does not have the virus.

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The Duchess of Cornwall has tested negative for the disease.

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Clarence House said Charles and Camilla were self-isolating in Balmoral, Scotland, adding that “it was not possible to determine from whom the prince contracted the virus due to the large number of commitments he made in his public service in recent weeks.”

He last met the Queen on the morning of March 12 and the monarch is said to be in good health and to follow all appropriate health and safety advice.