Omicron is now the dominant version of the coronavirus in the U.S., accounting for 73% of new infections last week, federal health officials said Monday. The Centers for Disease Control and Prevention numbers showed nearly a six-fold increase in omicron's share of infections in only one week. In much of the country, omicron's prevalence is even higher. It's responsible for an estimated 90% of new infections in the New York area, the Southeast, the industrial Midwest and the Pacific Northwest. To read more about omicron's impact in the U.S., click the link in our bio.