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# Evusheld May Not Neutralize New Covid Variant: FDA
- URL: https://www.fdaweb.com/evusheld-may-not-neutralize-new-covid-variant-fda/
- Published: 2023-01-06T12:00:00.000Z
- Updated: 2026-09-14T18:11:02.000Z
- Author: David McFarland
- Tags: Biologics, #legacy-id-D5153491

An FDA [update](http://email.prnewswire.com/ls/click?upn=3slWLw94I3jq-2B-2FedjFNgZLJsxjG040N2rwPdqKli79C7g8ItTfjMge6H7WuhcTv1RvtY-2FOuRGJQ8G3xFhvgEht840ggYhuzlbbZQzBDxJydDXxAl-2BdHQzMTVdFqWd3E452SpKBMefAXOCWtgJ-2Brdyw7a2PU7AIRTXw3T3DeXP2-2FvnOhqmZNHjZWZV3DCBQewqgvC-2FiaQvOWg0FaRW6qYoXa6SI3Txn-2BrAy6iR-2BP7Ny4-3DgJb3%5Ff0D7hj0BJ4b-2F7NuVqzPDs7FGiq8VLIwAX0sPSotqoLJejYqb1dmQHyCXe45PgGWVed0Id72XiAKN-2Bk-2FZfZfYNR2d0BsXjQHosCnJ3tZqKzAP31L8U0aiK8NifAJewPq33Uu-2BbdHmy3p5JWatFhANdfWh2rJwTy8MCZC7yffWCz7TvoCy6ZkxdhgXwKcBnLaF0-2B8QIKUr18azkhuu5fTEJVHuQwQMstl-2BZ5yKZC7MdNNVFcS5H0RhJvqe8zFqoAiPFoTiDUBO-2B26eeMcYAGUk-2F31fbMg52PNuj8uU5VKxFydoqdhj1j-2FtdA7U1oK-2Bmz2bjfVX9ajmnIXaCT1uUMmOsDieib3w61KCVGmpfFqc3X4-3D&ref=fdaweb.com) says it is closely monitoring the emergence of the XBB.1.5 Omicron subvariant that is [currently estimated](http://email.prnewswire.com/ls/click?upn=OXp-2BEvHp8OzhyU1j9bSWu3vTrNCJ4AEILg-2BmkpjDtwvTwU6jdVr4gQM-2BWxpXbWwr-2FB4PqTcSkUo8tlwQzJ04VL5SY74uxCz2UAszjUhM65k-3DEvLX%5Ff0D7hj0BJ4b-2F7NuVqzPDs7FGiq8VLIwAX0sPSotqoLJejYqb1dmQHyCXe45PgGWVed0Id72XiAKN-2Bk-2FZfZfYNR2d0BsXjQHosCnJ3tZqKzAP31L8U0aiK8NifAJewPq33Uu-2BbdHmy3p5JWatFhANdfWh2rJwTy8MCZC7yffWCz7TvoCy6ZkxdhgXwKcBnLaF0-2B8QIKUr18azkhuu5fTEJbM5oIc1Rd5iaeZdWcWQ4mLaua6liwo5pBaD-2Buhet7OtHps4ZS4E6HIiyBWwSr6wdOeeKYvirhqadI-2BY0MsHvlUn9-2BB76gkok5og0wq8NvTgKwK4-2B156ss-2Fa41nXhUpHPE7hSda-2FRfONdFU4a5rx2ok-3D&ref=fdaweb.com) to account for 28% of circulating Covid-19 variants in the U.S. “Because of its similarity to variants that are not neutralized by \[AstraZeneca’s\] Evusheld (e.g., XBB), the FDA does not anticipate that Evusheld will neutralize XBB.1.5,” the update says. “This means that Evusheld may not provide protection against developing Covid-19 for individuals who have received Evusheld and are later exposed to XBB.1.5\. However, we are awaiting additional data to verify that Evusheld is not active against XBB.1.5\. We will provide further updates as new information becomes available.”