NIH director on the spread of the omicron variant amid the ongoing pandemic

Maryland, Nebraska and Pennsylvania are the latest states reporting cases of the new omicron variant in the U.S., while it has now spread to more than 40 nations worldwide. And the CDC director said Friday the omicron variant could become the dominant COVID strain in the U.S. this winter. Dr. Francis Collins, director of the National Institutes of Health, joins Judy Woodruff to discuss.

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