Early evidence suggests Omicron variant more transmissible than Delta

New evidence suggests the Omicron variant may be more transmissible than the Delta variant, as Norway grapples with a sudden surge of COVID-19 cases. Crystal Goomansingh reports on the single event the spike is being linked to, and how scientists are learning more about the mutation, also known as B.1.1.529.

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• Omicron found in 6 more states, but experts say Delta remains greatest threat to U.S.
• Omicron COVID-19 variant can be fought with same tools used to combat Delta: WHO