Fig. 1

The median kit body weight of control (black columns) vs. case (white columns) mink kits. All groups (1–4) on the control farm and groups 1–3 on the case farm were weighed until day 15, while group 4 on the case farm was weighed until day 13. Statistical significance of differences between the two farms was determined by the Mann–Whitney U test (for nonparametric variables) (*P < 0.05; ****P < 0.0001). Bars indicate the median ± IQR