UK Prime Minister Boris Johnson was moved to an intensive care unit after his condition with coronavirus symptoms “worsened,” his office has said.

Johnson, 55, was first admitted to St Thomas’ Hospital in London on Sunday evening for what he said were “routine tests,” saying on social media that he was in “good spirits.”

But the apparent change in the leader’s health has shocked the nation, with politicians from his party and the opposition voicing their support for the leader, as the country battles an outbreak that has killed more than 5,000 people.