SARS-CoV-2 infection in farmed minks, the Netherlands, April and May 2020

Oreshkova, Nadia; Molenaar, Robert Jan; Vreman, Sandra; Harders, Frank; Oude Munnink, Bas B.; Hakze-van der Honing, Renate W.; Gerhards, Nora; Tolsma, Paulien; Bouwstra, Ruth; Sikkema, Reina S.; Tacken, Mirriam G.J.; Rooij, Myrna M.T. de; Weesendorp, Eefke; Engelsma, Marc Y.; Bruschke, Christianne J.M.; Smit, Lidwien A.M.; Koopmans, Marion; Poel, Wim H.M. van der; Stegeman, Arjan


Respiratory disease and increased mortality occurred in minks on two farms in the Netherlands, with interstitial pneumonia and SARS-CoV-2 RNA in organ and swab samples. On both farms, at least one worker had coronavirus disease-associated symptoms before the outbreak. Variations in mink-derived viral genomes showed between-mink transmission and no infection link between the farms. Inhalable dust contained viral RNA, indicating possible exposure of workers. One worker is assumed to have attracted the virus from mink.