Pfizer says its vaccine is safe and highly effective in 5- to 11-year-olds. by BY APOORVA MANDAVILLIThis entry was posted in Health Weight Watchers and tagged Health NYT on September 20, 2021 by Farzin Published: September 20, 2021 at 02:16PM from NYT Health https://ift.tt/3lIkVY9