Queen Elizabeth II tested positive for COVID-19 and is experiencing mild, cold-like symptoms, Buckingham Palace says, adding that the famously stoic 95-year-old monarch plans to carry on working.
The palace said the queen would continue with “light” duties at Windsor Castle over the coming week.
“She will continue to receive medical attention and will follow all the appropriate guidelines,” the palace said in a statement on Sunday.
People in the UK who test positive for COVID-19 are required to self-isolate for at least five days, although the British government says it plans to lift that requirement for England this week.
The queen has received three doses of coronavirus vaccine.
Both her eldest son Prince Charles, 73, and her 74-year-old daughter-in-law Camilla, Duchess of Cornwall have also recently contracted COVID-19. Charles has since returned to work.
There are also thought to be several recent virus cases among staff at Windsor Castle, where the queen is staying.
Senior British politicians sent get-well messages.
Prime Minister Boris Johnson tweeted: “I’m sure I speak for everyone in wishing Her Majesty The Queen a swift recovery from COVID and a rapid return to vibrant good health.”
Health Secretary Sajid Javid wrote that he was “Wishing Her Majesty The Queen a quick recovery,” while opposition Labour Party leader Keir Starmer wished the queen “good health and a speedy recovery. Get well soon, Ma’am.”
Britain’s longest-reigning monarch, the queen reached the milestone of 70 years on the throne on February 6, the anniversary of the death in 1952 of her father King George VI.
A fixture in the life of the nation, Elizabeth has been in robust health for most of her reign and has been photographed riding a horse as recently as 2020.