The FDA authorizes boosters of the Moderna and Pfizer COVID-19 vaccines for all Americans 18 or older.

The Food and Drug Administration (FDA) on Friday authorized boosters of the Moderna and Pfizer COVID-19 vaccines for all Americans 18 or older. “The FDA has determined that the currently available data support expanding the eligibility of a single booster dose of the Moderna and Pfizer-BioNTech COVID-19 vaccines to individuals 18 years of age and older,” Dr. Peter Marks, director of the FDA’s Center for Biologics Evaluation and Research, said in a statement. An FDA analysis of immune response data supported the decision. For Moderna’s vaccine, the FDA analyzed how 149 participants from the original clinical studies reacted after being given a third dose. For Pfizer’s shot, the FDA analyzed the immune response of approximately 200 participants who got a booster. Those who got a booster had higher antibody levels than those who did not. Studies and real-world data show the vaccines protect well against infection and hospitalization in the months …

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