World Omicron makes up 95.4% of U.S. COVID cases as of Jan. 1, says CDC By - January 4, 2022 0 193 Facebook Twitter Pinterest WhatsApp World By Staff Reuters Posted January 4, 2022 12:27 pm 1:23U.S. doctors fear COVID-19 cases will surge after holidays WATCH: U.S. doctors fear COVID-19 cases will surge after holidays © 2022 Reuters Advertisement Advertisement