A healthcare idiosyncratic administers a 3rd dose of the Pfizer-BioNTech Covid-19 vaccine astatine a elder surviving installation successful Worcester, Pennsylvania, U.S., connected Wednesday, Aug. 25, 2021.
Hannah Beier | Bloomberg | Getty Images
Side effects from Covid booster shots are akin to those felt aft the 2nd dose and are much apt to impact younger people, Pfizer said successful caller information submitted to the Food and Drug Administration arsenic it seeks support to administer booster shots crossed the U.S.
Pfizer's Phase 3 survey of booster doses, which included a radical of astir 300 participants from 18 to 55 years old, recovered that 63.7% experienced fatigue aft getting their boosters, 48.4% had headaches, and 39.1% felt musculus pain. The bulk of reactions to the booster were mild oregon mean successful severity, the institution said successful a 52-page study released by the bureau connected Wednesday. The company, on with BioNTech, are seeking the FDA's exigency support to administer 3rd doses to radical 16 and implicit crossed the U.S.
Pfizer antecedently evaluated broadside effects connected 2,682 second-dose recipients ages 16 to 55 and recovered that 61.5% developed fatigue, 54% suffered headaches and 39.3% dealt with musculus pain.
The survey besides tracked adverse events among 306 booster recipients, 44 of whom developed astatine slightest 1 unexpected broadside effect. The astir communal adverse event, swelling of the lymph nodes, appeared successful 16 of the participants.