U.S. shatters coronavirus vaccination records as more states see a spike in cases

The U.S. administered a record-breaking 20 million coronavirus vaccine doses in one week. As vaccination efforts ramp up, the CDC has new travel guidance for those who are fully vaccinated. But as Omar Villafranca reports, that good news comes with a warning. Dr. Len Horovitz, a pulmonary specialist at Lenox Hill Hospital, joins CBSN to break down the latest.