FIG. 3.

Comparison of number of V1/V2 variants detected by HTA with time after infection. Each datum point represents one subject from the primary infection cohort. The estimated time postinfection is plotted versus the number of V1/V2 variants detected for the subject (Fig. 2). Subjects in the primary infection cohort are compared to a separate group of subjects during the chronic stage of their HIV-1 infection. Although not resolved in the figure, there are nine individuals identified with single variants prior to week 7.