The insider added the Queen decided to let it be known she had the vaccination to prevent further speculation.
Could Prince Charles, Camilla and Princess Anne copy the Queen?
Prince Charles, 72, Camilla, Duchess of Cornwall, 73, and Princess Anne, 70, are the royals most likely to next receive the vaccine due to their age.
Whether or not they choose to copy the Queen and share when they have received the vaccine is up to them.
Express.co.uk has learnt that Charles will follow in his mother’s footsteps and share with the public when he receives the vaccine.