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Dr. Kavita Patel on why the COVID-19 vaccine is safe

04:09

NBC News medical contributor Dr. Kavita Patel joins Weekend TODAY’s Peter Alexander and says the emergency use authorization of a coronavirus vaccine in less than a year “truly is a miracle.” She explains why she thinks no corners were cut in the production of the vaccine. “The shortcut … was not from safety. It was from combining and running phases 1 and 2 essentially in parallel, where normally they would be contiguous,” she says.