COVID-19 updates: Classes in Chicago canceled for 4th day

The United Kingdom recorded more than 200,000 cases of COVID-19, according to the UK Health Security Agency.

The 218,724 new infections is the highest figure ever reported in a single day and an increase of nearly 60% from the number of cases reported on the same day last week.

However, there has been a backlog of data due to the holiday weekend so the number includes four days of data from Northern Ireland and two days of data from Wales, the UKHSA said.

-ABC News' Mike Trew

Sen. Rob Portman, R-Ohio, tested positive for COVID-19 last night, according to a press release. 

Portman took an at-home COVID test which came back positive. The senator said he is asymptomatic and feels fine.

"I have been in contact with the Attending Physician and my personal doctor. I am following their medical advice and following CDC guidelines and isolating for the recommended five days," Portman said in the statement.

He will be working remotely this week, but will not be able to be in Washington, D.C., for votes.

Sweden's King Carl XVI Gustaf and Queen Silvia tested positive for COVID-19 last night, according to a palace statement. 

Both are fully vaccinated and have received a third booster shot.

The king and queen said they have mild symptoms and are feeling well, in the statement.

They are isolating at home and contact tracing is ongoing.

More than 1 million new COVID-19 cases were reported in the United States on Monday, according to Johns Hopkins University. 

The 1,082,549 new infections were about double last week's record daily cases, according to the university's data. This is likely due to a reporting backlog of cases from holiday testing.

The US recorded 1,688 deaths related to COVID-19 on Monday, below the record high of 4,442, set on Jan. 20, 2021, according to the university's data.