The 94-year-old monarch and the 99-year-old Duke of Edinburgh were the first to receive doses of the COVID-19 vaccine in January 2021.
Queen Elizabeth II took part in a video call with health officials, who were leading the deployment of the COVID-19 vaccination across the four nations of the UK.
During the video call, the health officials asked the Queen about her experience of being vaccinated.
"Well, as far as I can make out it was quite harmless. It was very quick, and I've had lots of letters from people who've been very surprised by how easy it was to get the vaccine," said the Queen.
The Queen, who rarely speaks about her own health, also added that "It didn't hurt at all."
The monarch stated that she understood getting vaccinated could be a "difficult" experience for some people, however, encouraged everyone to "think about other people rather than themselves".