The major US airlines including American Airlines, Delta Air Lines, United Airlines, Southwest Airlines, and other trade groups had asked the CDC on March 22 to change its guidance to say "vaccinated individuals can travel safely".
But worldwide travelers headed to the United States should have a negative Covid-19 test before they get on the plane, be tested after arrival, and must quarantine if local authorities in the United States require it, the CDC said in a statement.
However, the TSA said it was not lifting restrictions that bar most-non US citizens from the United States if they have recently traveled to China, Brazil, South Africa, and most of Europe.
CDC defines "fully vaccinated" as at least 2 weeks after receiving the last recommended dose of an FDA-approved COVID-19 vaccine.
More than one in five adults in the United States is now fully vaccinated, CDC director Rochelle Walensky said at a briefing. The agency cited "recent studies" of real-world evidence proving vaccines work outside of a clinical trial environment.
U.S. Capitol on lockdown after security incident
Authorities said that there was no longer an ongoing threat and that the attack did not appear to be related to terrorism. Video from reporters at the scene posted on Twitter appeared to show a vehicle that had crashed into a barrier.
Some travel guidance remains unchanged.
It's still recommended, however, that individuals who are not fully vaccinated have their Easter dinner and egg hunts with only the people in their household or outdoors while 6 feet apart to prevent the spread of Covid-19, the CDC said.
"Some are starting to make exceptions for those who are vaccinated".
The CDC now says that fully vaccinated people can travel at a low risk to themselves, and so long as COVID-19 precautions are taken - including mask-wearing and social distancing - those people can travel around the country without testing and quarantining. However, the CDC had not made any move to review its guidance that discouraged all non-essential trips. Those who are not fully vaccinated should continue to self-quarantine for 7 days after travel and a negative test, or 10 days after travel if not tested.