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Dr. Natalie Azar: Vaccine eligibility in kids 5 to 11 could get country to herd immunity

05:25

Back-to-school reopenings have been rocky as kids between 5 and 11 test positive for COVID-19 while being ineligible for the vaccine. NBC News medical contributor Dr. Natalie Azar tells TODAY how that could change with Pfizer recently finding its vaccine safe for this age group.