U.S. to require negative coronavirus test from travelers from the U.K.

How it works: Passengers will have to show proof of a negative result on a genetic swab test, known as PCR, or an antigen test that was administered within three days before their flight.

• Airlines will be required to confirm the negative test result of all passengers before they board, and they will have to deny boarding to those who decline to show a test.
• "This additional testing requirement will fortify our protection of the American public to improve their health and safety and ensure responsible international travel," the CDC wrote in a news release late Thursday.

United Airlines, Virgin Atlantic and Delta Air Lines already had a similar policy in place for flights between Britain and the U.S., according to the New York Times.