![A healthcare worker administers a third dose of the Pfizer-BioNTech COVID-19 vaccine at a senior living facility in Worcester, Pennsylvania, in August.](https://i1.wp.com/media.npr.org/assets/img/2021/11/18/gettyimages-1234867037_wide-365e024e5f79ba84d3bc5758963cf55c66403a1b.jpg?w=705&ssl=1)
The FDA on Friday granted emergency use authorization for the Pfizer-BioNTech and Moderna booster shots. The boosters have already been available for people 65 and older and to high-risk adults.
(Image credit: Hannah Beier/Bloomberg via Getty Images)
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