A dose of a Pfizer COVID-19 vaccine is prepared at Lurie Children’s hospital, Nov. 5, 2021, in …

A dose of a Pfizer COVID-19 vaccine is prepared at Lurie Children's hospital, Nov. 5, 2021, in ...

A dose of a Pfizer COVID-19 vaccine is prepared at Lurie Children’s hospital, Nov. 5, 2021, in Chicago. (AP Photo/Nam Y. Huh, File)