Starting Monday, all airline passengers arriving to the U.S. from the United Kingdom will be required to present a negative COVID-19 test taken within 72 hours of their flight's departure.
That's according to a statement issued Thursday by the U.S. Centers for Disease Control and Prevention amid concerns about a new coronavirus variant that may be more transmissible.
The decision was a shift from Tuesday's White House disclosure to airlines that it was not planning to implement the testing requirement, but earlier on Thursday, airline companies United and Delta had already said they would require a negative COVID-19 test within 72 hours for passengers arriving to the U.S. from the U.K.
The British Embassy in Washington did not immediately comment.
The CDC's announcement follows the emergence of a new COVID-19 variant in Britain that has prompted over 40 countries to ban U.K. passengers from entering.
The order will be signed on Friday and take effect on Monday.