Week in 2020
Parameter  13  14  15  16  20  24  28
Plasma pools ≥LOD, %  0.0  1.3  1.3  6.3  0.0  5.0  7.0
µNT50 of plasma pool titers ≥LOD, 1:X  n.a.  37  5  6, 18, 26, 34, 87  n.a.  7, 10, 20, 22  4, 7, 8, 9, 12, 18, 24
Number of plasma pools tested  40  80  80  80  100  80  100
SARS-CoV-2 nAb positive plasma donors in Austria, %  0.00  0.21  0.21  1.04  0.00  0.83  1.17
Cumulative COVID-19 incidence in Austria, %a  0.10  0.14  0.16  0.17  0.18  0.19  0.21