Infectious disease expert addresses parents concerns about COVID vaccine for kids

I recently got a question from a viewer about COVID-19 vaccine dosing. She asked me why a 103-pound woman gets the same dose of vaccine as a 300-pound man. Also, with the Pfizer COVID vaccine now approved for children 12 and older in the United States, parents perhaps might have the same question. I spoke with Dr. Michelle Barron, the senior medical director of infection prevention at UCHealth, to get the answer.