Testing Positive for the Coronavirus Overseas: What You Need to Know – The New York Times

May 13, 2022

To enter the United States, all air passengers age 2 and older must have a negative coronavirus test taken within one day of departure…. The accepted PCR and viral tests are available at many hotels, airports, health clinics and local pharmacies overseas. Certain antigen or nucleic acid amplification self-tests like BinaxNOW and Ellume…are also accepted. These require you to connect to a telehealth service by video, so that you can be supervised by a medical practitioner while you take the test….
There are no testing requirements for travelers entering the United States through land or ferry ports of entry.