Britain's Queen Elizabeth II on Tuesday canceled her planned virtual engagements as she is suffering from mild COVID-19 symptoms, Buckingham Palace said.
The palace announced on Sunday that the 95-year-old monarch had contracted the virus.
"Since Her Majesty is still experiencing mild cold-like symptoms, she has decided not to carry out her planned virtual engagements today, but will continue with mild duties," Mahal said.
Light duties likely included responsibilities of his state, such as reading and responding to documents and letters, which he received daily in his famous red dispatch boxes.
A source close to the palace told CNN that the Queen's further engagements will be decided closer in time in the coming week.
At the end of last year, concerns about the Queen's health resurfaced due to her aging and health issues. However, she continued to work from Sunday despite testing positive for the coronavirus, on Monday issued a condolence message for Brazilians over the floods in the country.
The Queen's diagnosis is the latest Covid case to affect the royal household. Her eldest son and heir to the British throne, Prince Charles, contracted the virus for the second time on 10 February, and had "recently" seen his mother. A few days later, his wife Camilla also tested positive.
Additionally, a royal source told CNN on Sunday that recently "a number of cases in the Windsor Castle team ... were diagnosed."
UK media have reported that the Queen has been fully vaccinated. Buckingham Palace previously confirmed that the monarch and her late husband, Prince Philip, had both received their first doses of a COVID-19 vaccine in January 2021. The palace has declined to reveal any information about the latter's vaccinations, citing medical confidentiality.
The Queen - who reached the 70-year milestone as British monarch on February 6 - recently took a step back on advice from doctors on rest after an overnight hospital stay in October for an unknown reason. After that personally the engagement was resumed.
She has used a walking stick at several events in recent months and mentioned her mobility at an event last week. Holding an audience with two military secretaries in the Oak Room at Windsor Castle, he quipped, pointing his leg: "Well, as you can see, I can't move." A royal source told CNN at the time that she was believed to be feeling a little stiff rather than injured or unwell.
She also plans to attend several major events next month: a diplomatic reception at Windsor Castle on 2 March, the annual Commonwealth Service at Westminster Abbey on 14 March; and a service of thanks to Prince Philip at the same location on March 29.
Nationwide celebrations for his Platinum Jubilee are due in June.