Figure 1.

Time from human immunodeficiency virus type 1 (HIV-1) infection to the composite end point, by genomic region. The composite end point was defined as the earliest date of either a CD4⁺ T-cell count <250 cells/mm³, antiretroviral therapy initiation, or death. The genomic regions are labeled (i) gag, (ii) pol, (iii) vpu, (iv) env, and (v) gp. In each genomic region, subtype A was compared to subtype D.