Why the U.S. Failed to Control Delta and Now Omicron As It Becomes Dominant Variant
http://www.newsweek.com/omicron-covid-variant-delta-us-failed-control-dominant-1661560
The Omicron variant is now dominant in the United States, accounting for 73.2 percent of new cases according to the Centers for Disease Control and Prevention.
Its rise to dominance has been rapid. Omicron was first confirmed in the U.S. on December 1 in a traveler who had returned from South Africa on November 22.
