Pfizer says its Covid vaccine is 91% effective in kids of ages 5 to 11

The efficacy result is based on a trial of about 2,250 children, according to the briefing documents

The efficacy result is based on a trial of about 2,250 children, according to the briefing documents https://ift.tt/3vBnY95 October 22, 2021 at 02:59AM