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Cryptic SARS-CoV-2 lineage identified on two mink farms as a possible result of long-term undetected circulation in an unknown animal reservoir, Poland, November 2022 to January 2023
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View Affiliations Hide AffiliationsKatarzyna Domańska-Blicharzdomanska piwet.pulawy.pl
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Citation style for this article: . Cryptic SARS-CoV-2 lineage identified on two mink farms as a possible result of long-term undetected circulation in an unknown animal reservoir, Poland, November 2022 to January 2023. Euro Surveill. 2023;28(16):pii=2300188. https://doi.org/10.2807/1560-7917.ES.2023.28.16.2300188 Received: 24 Mar 2023; Accepted: 12 Apr 2023
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Abstract
In late 2022 and early 2023, SARS-CoV-2 infections were detected on three mink farms in Poland situated within a few km from each other. Whole-genome sequencing of the viruses on two of the farms showed that they were related to a virus identified in humans in the same region 2 years before (B.1.1.307 lineage). Many mutations were found, including in the S protein typical of adaptations to the mink host. The origin of the virus remains to be determined.
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