The CDC says more than 11 million doses of coronavirus vaccines have been shipped across the U.S. this month, but so far only about 2 million people have received the vaccine. Dr Robert Glatter, an emergency physician at Lenox Hill Hospital in New York, joined CBSN to discuss why the U.S. has had a slow start to the rollout of the COVID-19 vaccine. He also talks about a new vaccine formula being tested by Novavax, and his concerns about the hazards of holiday travel amid the pandemic.