Omicron estimated to be 95.4% of coronavirus variants in U.S. - CDC

The Omicron variant was estimated to be 95.4% of the coronavirus strains circulating in the United States as of Jan. 1, the U.S. Centers for Disease Control and Prevention (CDC) said on Tuesday. The variant has swiftly spread across the country since its detection on Dec. 1, replacing Delta as the dominant strain and sparking a new wave of infections that pushed daily cases near the 1 million mark on Monday. The CDC said the variant accounted for an estimated 77% of cases in the week ended Dec. 25, up from the 58.6% projection it had disclosed last week.