Effective January 26, 2021, all airline or other aircraft passengers arriving in the United States from any foreign country, with a few exceptions, must present: (1) a negative pre-departure test result for SARS-CoV-2, the virus that causes COVID-19 (Qualifying Test); or (2) written or electronic documentation of recovery from COVID-19 after previous infection in the form of a positive viral test result and a letter from a licensed health care provider or public health official stating that the passenger has been cleared for travel (Documentation of Recovery).

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