The Omicron variant is spreading faster than any previous coronavirus strain by far. More than 250,000 new COVID-19 cases were reported in the U.S. on Monday, the highest level since September. Nancy Chen has the latest.
The Omicron variant is spreading faster than any previous coronavirus strain by far. More than 250,000 new COVID-19 cases were reported in the U.S. on Monday, the highest level since September. Nancy Chen has the latest.