COVID-19 Information Last updated:  1/2023 The CDC’s Order requiring proof of vaccination for non-U.S. citizen nonimmigrants to travel to the United States is still in effect.  For more information see Requirement for Proof of COVID-19 Vaccination for Air Passengers . Starting at 12:01 AM ET on January 5, all air passengers two years and older traveling to the United States originating from the Peoples …