Queen Elizabeth.Photo: Chris Jackson - WPA Pool/Getty Images

Queen Elizabethhas had another setback in her return to public duties.
She has sprained her back and with “great regret” missed the solemnRemembrance Dayceremony in London on Sunday.
In a short message, Buckingham Palace announced early on Sunday, “The Queen, having sprained her back, has decided this morning with great regret that she will not be able to attend today’s Remembrance Sunday Service at the Cenotaph. Her Majesty is disappointed that she will miss the service.”
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It’s unknown how the Queen suffered the injury but it is likely to have happened in the last day or so, as on Thursday the palace had said she intended to be at the ceremony. And it is unrelated to herdoctor’s recent advice to rest, PEOPLE understands.
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“Nobody regrets the Queen’s absence today more deeply than Her Majesty,” the source adds.
She is hoping to be able to continue as planned with her schedule of light official duties that she has been undertaking at home at Windsor, in the coming week.
Camilla, Duchess of Cornwall on Remembrance Sunday, with Kate Milddleton and Sophie, Countess of Wessex.Samir Hussein/Pool/WireImage

Also among the royal party paying their respects were Princess Anne and Prince Edward. Prime Minister Boris Johnson led the politicians, including past Prime Ministers, while representatives of neighboring counties and the 54 nations of the Commonwealth and the leaders of the various branches of the military also laid wreaths.
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The ceremony ended after about 25 minutes with a stirring rendition of the national anthem,God Save The Queen.
Remembrance Sunday isone of the most sacred eventsin the Queen’s calendar, and she has only missed a handful during her 69-year reign, such as when she was pregnant or out of the country on a tour.
Prince Charles.Samir Hussein/Pool/WireImage

When the palace announced on Thursday that she was set to attend the Cenotaph ceremony, a statement added she would not be attending a planned engagement, at the General Synod of the Church of England (Prince Edward"will attend as planned," the palace said in a statement).
It follows a period of concern about her health since shepulled out of trip to Northern Irelandon Oct. 19 andstayed overnightin King Edward VII hospital in London for some “preliminary investigations.”
Charles allayed some of those concerns when he answered well-wishers questions during a visit to Brixton, South London, on Thursday, telling someone who asked from the crowd “She’s alright, thank you.”
The Queenspent last weekend at Sandringham, her country home in Norfolk, most likely checking on her horses as she was spotted with her racing manager John Warren. Back at Windsor, she has been carrying out “light duties” such as video calls and audiences, via telephone, with PrIme Minister Johnson.
source: people.com