Khan said the update reinforces the safety and effectiveness of the vaccines, and is another incentive for people to get vaccinated.
The U.S. Centers for Disease Control (CDC) issued new guidance on Friday that people that are fully vaccinated can safely travel at "low risk".
- Fully vaccinated people can travel within the US, without getting tested for the coronavirus or quarantining. That means the second shot for vaccines that require two jabs.
US air travel has begun rebounding - 1.6 million people passed through TSA checkpoints on Thursday, well above the 124,000 who did so a year before yet still below the 2.4 million from the same day in 2019.
The CDC's new guidance says fully vaccinated people do not need Covid-19 tests before worldwide travel unless it is required by the global destination and vaccinated people returning from foreign travel do not need to self-quarantine after returning to the United States, unless required by state or local authorities. However, it urged vaccinated Americans to keep wearing masks in public and to avoid crowds.
But global 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. They must either get tested 3-5 days after they return and self-quarantine for 7 days, or self-quarantine for 10 days with no test.
All people, even if vaccinated, should still wear masks on planes, the CDC said. It said fully vaccinated people can gather privately together without masks, or visit one un-vaccinated household - such as vaccinated grandparents visiting the home of a child and grandchildren.
But the administration is not lifting restrictions that bar most-non USA citizens from the United States who have recently been in China, Brazil, South Africa and most of Europe.