Pfizer/BioNTech says its Covid-19 vaccine is 100% effective and well tolerated in adolescents
By Lauren Mascarenhas Clinical trial results of Pfizer/BioNTech’s Covid-19 vaccine showed its efficacy is 100% and it is well tolerated in youths ages 12 to 15, the companies said Wednesday. Pfizer/BioNTech plan to submit the data to the US Food and Drug Administration as soon as possible for expanded emergency use authorization of the two-dose vaccine. In a Phase 3 trial of 2,260 participants ages 12 to 15 in the US, the vaccine elicited strong antibody responses one month after the second dose — exceeding those demonstrated in people ages 16 to 25 in previous trials, Pfizer reported. The vaccine