Minnesota Now with Nina Moini

Dr. Melanie Swift on booster shots, vaccines for kids, and the new COVID variant

A needle with a vaccine is shown in a close-up photo
Nurse Lydia Holly prepares a child's COVID-19 vaccine dose, on Nov. 3, 2021, at Children's National Hospital in Washington. U.S. regulators are urging drugmaker Pfizer to apply for emergency authorization for a two-dose regimen of its COVID-19 vaccine for children ages 5 and under while awaiting data on a three-dose course, aiming to clear the way for the shots as soon as late February.
Carolyn Kaster | AP