In this study, the rate of HIV recent infections among infected blood donors based on Lag Avidity testing was 23.6% (61/259), which was similar to that among HIV seropositive donors in Brazil during 2007 to 2011[19] (17.5%, 43/246) and that among HIV nucleic acid testing (NAT) positive donors in the U.S during 2006 to 2009 [20] (23.6%, 210/891,), where incidence testing assay of Vironostika-LS was used. Here, BRD2 is linked to infection.