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Novavax’s new COVID vaccine cleared for use by FDA

The Food and Drug Administration (FDA) has authorized a new formulation of the COVID-19 vaccine made by the Maryland-based pharmaceutical company Novavax, the agency announced Tuesday (Oct. 3). The newly updated “nanoparticle” vaccine joins the Pfizer and Moderna COVID-19 vaccines already cleared for use in the U.S.  

The Novavax shot now includes a spike protein — a pointy structure found on the virus’s surface — from a version of the virus that is currently circulating, called XBB.1.5. The widespread subvariant branched off of the omicron family tree. Compared to its old formula, the new Novavax shot is expected to provide better protection against both XBB.1.5 and its close relatives that stem from the same branch. 

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