The Queen is unwell with a chest infection and has withdrawn from her engagements this week, Buckingham Palace has announced.
Camilla, 77, who has not long returned from a busy official overseas tour to Australia and Samoa, is understood to be resting at home.
The update comes after a year of difficult health troubles for the royal family, with both the King and the Princess of Wales being diagnosed with cancer.
A Palace spokesman said: “Her Majesty The Queen is currently unwell with a chest infection, for which her doctors have advised a short period of rest.
“With great regret, Her Majesty has therefore had to withdraw from her engagements for this week but she very much hopes to be recovered in time to attend this weekend’s Remembrance events as normal.
“She apologises to all those who may be inconvenienced or disappointed as a result.”
The Duchess of Gloucester has stepped in to attend the annual opening of the Field of Remembrance at Westminster Abbey on Thursday on the Queen’s behalf.
Camilla has also pulled out of attending the Buckingham Palace reception for Olympic and Paralympic athletes hosted by the King the same evening.
No further details regarding her illness or treatment have been released, but she is understood to be being cared for under doctors’ supervision.
