The delta variant is spreading rapidly in the U.S. and now accounts for a fifth of recent coronavirus cases, the head of the Centers for Disease Control and Prevention said. Rochelle Walensky said in an appearance at the Milken Institute Future of Health Summit on Wednesday that the rapid growth in the delta variant, which first emerged in India, was seen after the strain accounted for just 3% of cases analyzed several weeks ago. The delta variant is predicted to be the second most prevalent lineage nationally for the two weeks ending June 19, and it’s already become the predominant lineage in some regions, according to the CDC. The numbers given by Walensky align with other recent data suggesting the delta variant is gaining a foothold in the U.S. Subscribe to our YouTube channel: https://bit.ly/2TwO8Gm Bloomberg Quicktake brings you live global news and original shows spanning business, technology, politics and culture. Make sense of the stories changing your business and your world. To watch complete coverage on Bloomberg Quicktake 24/7, visit http://www.bloomberg.com/qt/live, or watch on Apple TV, Roku, Samsung Smart TV, Fire TV and Android TV on the Bloomberg app. Have a story to tell? Fill out this survey for a chance to have it featured on Bloomberg Quicktake: https://cor.us/surveys/27AF30 Connect with us on… YouTube: https://www.youtube.com/user/Bloomberg Breaking News on YouTube: https://www.youtube.com/c/BloombergQuickTakeNews Twitter: https://twitter.com/quicktake Facebook: https://www.facebook.com/quicktake Instagram: https://www.instagram.com/quicktake