For thymus, HCMV infections and reactivations stimulated higher hCD45 cellularity and higher absolute numbers of CD4/CD8 double negative (DN, REAC vs. CTR p = 0.02), double positive (DP, n.s.), and CD4 single positive (CD4SP, INF vs. CTR p = 0.01, REAC vs. CTR p = 0.01) T cells (Figure 3B, Table S3). Here, CD4 is linked to cytomegalovirus infection.