Boris Johnson has been moved to intensive care.

Prime Minister Boris Johnson was moved into intensive care on Monday, according to a statement from his office.

Earlier Monday, British officials had given assurances that he was healthy enough to run the country, but some unease arose over a lack of information on his condition.

A No 10 statement read: “Since Sunday evening, the prime minister has been under the care of doctors at St Thomas’ Hospital, in London, after being admitted with persistent symptoms of coronavirus.

“Over the course of this afternoon, the condition of the prime minister has worsened and, on the advice of his medical team, he has been moved to the intensive care unit at the hospital.”

It continued: “The PM is receiving excellent care, and thanks all NHS staff for their hard work and dedication.”

Chancellor Rishi Sunak said his thoughts were with the prime minister and his pregnant partner, Carrie Symonds, and that Mr Johnson would “come out of this even stronger”.

Labour leader Sir Keir Starmer described it as “terribly sad news”.

“All the country’s thoughts are with the Prime Minister and his family during this incredibly difficult time,” he added.

Mr Johnson was initially taken to hospital for routine tests after testing positive for coronavirus 10 days ago. His symptoms included a high temperature and a cough.