The U.K. is further restricting border controls to prevent new strains of the novel coronavirus from entering the country, suspending all the "travel corridor" arrangements that had meant arrivals from certain countries were not required to quarantine, Reuters' William James reports. The change will become effective at 4:00 GMT on Monday, and means all passengers must have a recent negative COVID-19 test and move immediately into isolation upon arrival, James notes. Publicly traded companies in the space include Alaska Air (ALK), American Airlines (AAL), Delta Air Lines (DAL), JetBlue (JBLU), Southwest (LUV), Spirit Airlines (SAVE) and United Airlines (UAL).
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