The frequency of NAT yield infections decreased from 6.41/105 donors in 2007 to 0.98/105 donors in 2013 (RR = 6.54, p < 0.05), but there were no statistically significant trends over time either for WP or OBI (WP R = −0.49, p = 0.06; OBI R = −0.42, p = 0.12) (Figure 1 and Figure 5). This evidence concerns the gene BRD2 and infection.