Britain's Prince William, the Duke of Cambridge, has received his first dose of the COVID-19 vaccine. The 38-year-old prince contracted coronavirus last year.

William, the grandson of Queen Elizabeth II and second-in-line to the British throne, revealed on Twitter on Thursday morning that he got his first shot earlier this week, along with a picture of the moment. Last week, Britain opened its national vaccination program to anyone over the age of 34.

"On Tuesday I received my first dose of the COVID-19 vaccine," the official account for the Duke and Duchess of Cambridge tweeted.

"To all those working on the vaccine rollout - thank you for everything you've done and continue to do."

William revealed in November that he was sick with COVID-19 in April 2020, around the same time that his father, Prince Charles, also contracted the virus. British media reported at the time that he was treated by palace doctors and isolated at home, and that he was struggling to breathe at one point.

Both Queen Elizabeth and Prince Charles have also gotten the vaccine.