For subject VC10014, the Env sequences were from 0.73 (G4), 1.29 (F8), 1.79 (C6a), 3.22 (H5a), or 3.59 (C4a) years post-infection (YPI), and 0.57 (C104, C504), 1.01 (C505, C1105), or 2.60 (C1906) YPI for subject VC20013. This evidence concerns the gene ERVW-1 and infection.