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Is the "double mutant' variant as scary as it sounds? Dr. Mario Ramirez weighs in


Joining Katy Tur to discuss the latest in covid vaccines, variants and spikes is NBC News Now Correspondent Priscilla Thompson, who is in Lansing, Michigan, and the Managing Director of Opportunity Labs, Dr. Mario Ramirez. He served as Pandemic and Emerging Threats Coordinator at HHS during the Obama Administration.