LONDON — Britain’s Prince Charles has tested positive for COVID-19 and is self-isolating, his office said Thursday.

A message on his official Twitter page said Charles tested positive on Thursday morning and was “deeply disappointed” not to be able to attend a scheduled visit in Winchester, England.

Charles, 73, met dozens of people during a large reception at London’s British Museum on Wednesday evening.

He was accompanied by his wife Camilla, and was in close contact with Britain’s Treasury chief Rishi Sunak, among others. Charles’ office, Clarence House, confirmed that he is triple vaccinated.

Charles previously contracted the coronavirus in March 2020, during the first wave of the pandemic.

Spain’s King Felipe VI, 54, and Denmark’s Queen Margrethe II, 81, also tested positive for the coronavirus this week. — Agencies