Norway warns of coronavirus vaccine risks for elderly.

As the U.S. grapples with chaos in its vaccine distribution system, officials in Norway are warning COVID-19 vaccines may be too risky for the elderly and terminally ill. Dr. Bob Lahita, chairman of medicine at St. Joseph University Hospital in Paterson, New Jersey, joined CBSN to discuss whether the warning is cause for concern and to explain what we know so far about new coronavirus variants emerging in the U.S.