British Prime Minister Boris Johnson moved to intensive care

Boris Johnson, Brexit, EU
Britain’s Prime Minister Boris Johnson leaves 10 Downing Street to attend the weekley session of Prime Ministers Questions in Parliament in London, Wednesday, Jan. 22, 2020. (AP Photo/Kirsty Wigglesworth)

LONDON — British Prime Minister Boris Johnson has been moved to the intensive care unit of a London hospital after his coronavirus symptoms worsened.

Johnson’s office says Johnson is conscious and does not require ventilation at the moment.

Johnson was admitted to St. Thomas’ Hospital late Sunday, 10 days after he was diagnosed with COVID-19.

“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,” his office said in a statement.

It said Johnson has asked Foreign Secretary Dominic Raab to deputize for him.

There was no indication of how long Johnson might remain hospitalized. The prime minister’s spokesman said Johnson had spent a comfortable night and remained in charge of government.

Johnson sent out a tweet thanking the National Health Service for taking care of him and others in this difficult time.

“On the advice of my doctor, I went into hospital for some routine tests as I’m still experiencing coronavirus symptoms,” Johnson said in the tweet. “I’m in good spirits and keeping in touch with my team, as we work together to fight this virus and keep everyone safe.”.

Johnson’s spokesman, James Slack, refused to say what kind of tests Johnson was undergoing. He insisted that “the PM remains in charge of the government.”

“He is receiving updates in hospital and is continuing to receive a (ministerial red) box” of files and briefing papers, Slack said,

The 55-year-old leader had been quarantined in his Downing Street residence since being diagnosed with COVID-19 on March 26 — the first known head of government to fall ill with the virus.

Johnson was admitted to the hospital as a message to the nation from Queen Elizabeth II was being broadcast Sunday evening. The 93-year-old monarch urged the public to show resolve and follow advice to stay inside.

Concerns had been growing about Johnson’s welfare ever since he posted a message Friday saying that he was feeling better, though was still feverish.

The virus causes mild to moderate symptoms in most people, but for some, especially older adults and the infirm, it can cause pneumonia and lead to death.

The government said Monday that 51,608 people had been confirmed to have the coronavirus in Britain, 5,373 of whom have died.

One of the advantages of being in the hospital is that it will allow doctors to directly monitor Johnson’s condition.

Derek Hill, a professor of medical imaging science at University College London said that since COVID-19 causes difficulty breathing, one test performed on people with the disease is lung imaging with ultrasound or CT scans to see how badly they might be affected.

“Some people are rapidly discharged,” he said. “Some others can quickly deteriorate and need help breathing. We have no reason to believe the PM needs such help.”

Hill said there are various types of breathing help, depending on the person and the difficulties.

“The reasons some people get seriously ill with COVID-19 while others have minor symptoms is not yet fully understood,” Hill said. “But doctors managing these patients report that more men than women have serious problems, and patients who are overweight or have previous health problems are at higher risk.”