Eurosurv. Cryptic SARS-CoV-2 lineage identified on two mink farms as a possible result of long-term undetected circulation in an unknown animal reserv

[tetano]

• Katarzyna Domańska-Blicharz[SUP]1[/SUP] , Bas B Oude Munnink[SUP]2[/SUP] , Anna Orłowska[SUP]3[/SUP] , Marcin Smreczak[SUP]3[/SUP] , Justyna Opolska[SUP]1[/SUP] , Anna Lisowska[SUP]1[/SUP] , Paweł Trębas[SUP]3[/SUP] , Wojciech Socha[SUP]3[/SUP] , Aleksandra Giza[SUP]4[/SUP] , Arkadiusz Bomba[SUP]4[/SUP] , Ewelina Iwan[SUP]4[/SUP] , Jerzy Rola[SUP]3[/SUP] , Marion Koopmans[SUP]2[/SUP]

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.

https://www.eurosurveillance.org/content/10.2807/1560-7917.ES.2023.28.16.2300188#html_fulltext