Dr. Peter Marks, director of the Center for Biologics Evaluation and Research in the Food and Drug Administration, urged parents to be patient, saying the agency will rapidly evaluate vaccines for 5- to 11-year-olds as soon as it gets the needed data. (JIM LO SCALZO/Associated Press)
NEW YORK — Pfizer has submitted research to the U.S. Food and Drug Administration on the effectiveness of its covid-19 vaccine in children as it moves closer to seeking approval for expanded use of th…