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 Arts Prosecution and defense present closing arguments in trial of Sean Combs by Scott Detrow National What this term says about where the Supreme Court is headed by Scott Detrow 300x250 Ad Support quality journalism, like the story above, with your gift right now. Donate