National Health & Safety Experts say more testing is urgently needed to spot and track the variant in the U.S. 4:51pm November 29, 2021 by Rob Stein Health National Share URL copied to clipboard! Play Pause There was an error loading the media player. Copyright 2021 NPR. To see more, visit https://www.npr.org. 300x250 Ad More All Things Considered World News A U.S. doctor in Gaza wants President Biden to know 'we are not safe' National Pod Corner: 'Uncuffed' 300x250 Ad Support quality journalism, like the story above, with your gift right now. Donate