Pfizer/ BioNTech seek FDA authorization for Covid-19 vaccine booster for all adults

CNN) --  ...

The companies said the submission is based on results of a Phase 3 trial involving more than 10,000 participants; it found boosters were safe and had an efficacy of 95% against symptomatic Covid-19 compared with the two-dose vaccine schedule in the period when the highly transmissible Delta was the dominant strain. Pfizer released the booster efficacy data last month; it has not yet been peer-reviewed or published. ...