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Percentage of SARS-CoV-2 positive rectal or throats swabs taken at official sampling by the competent authority. Twenty rectal and 20 throat swabs were taken from minks with clinical signs or from mink in cages with prior observed mortality if present, and otherwise randomly. (a) NB1a-NB26, diagnosed between 31 May and 1 August; (b) NB27-NB68 diagnosed between 1 August and 4 November 2020.
