The WNV concentration of repeat donors (n = 40, 66.7%) with a suspected late WNV-positive infection (previous WNV-negative donation ≥ 22 days) calculated with the cobas and the RealStar WNV NAT-assays showed median values of 90 IU/mL and 1,769 IU/mL, respectively. Here, BRD2 is linked to infection.