Debate over FDA plans to tighten COVID-19 vaccine approval standards

The FDA's vaccine chief says the agency plans to tighten approval standards for COVID-19 vaccines, citing concerns about potential risks for children. In a leaked memo, Dr. Vinay Prasad says a review of records links 10 children's deaths to the COVID vaccine. He did not provide data to support the claim. CBS News medical contributor Dr. Celine Gounder explains what to know.