New international travel restrictions take effect as U.S. responds to spread of COVID-19 Omicron variant
The Biden administration is enforcing new travel requirements as the Omicron variant raises concerns globally. Meanwhile, the Delta variant is still largely responsible for a surge in U.S. infections, with average cases topping 100,000 per day. Infectious disease specialist Dr. Leslie Diaz joins CBSN with more on the latest coronavirus headlines.