Figure 1From: Association of chemokine receptor gene (CCR2-CCR5) haplotypes with acquisition and control of HIV-1 infection in ZambiansAssociation of two CCR2-CCR5 diplotype (HHD/HHE and HHF*2) with time to HIV-1 acquisition among initially seronegative partners of HIV-1 discordant Zambian couples. Analysis was based on 567 initially seronegative HESNs (panel a) or 295 seronegative female HESNs only (panel b). Vertical lines on each Kaplan-Meier curve represent subjects censored at the last follow up visit (before December 2006).Back to article page