For the baseline CD4+ T cell count before treatment (Tps), we adopted the value, Tps = 486 cells/μl, from Strain et al. [30], which was the median value for all 27 patients who initiated treatment during primary infection either before (13 out of 27 patients) or less than 6 mo after seroconversion (14 out of 27 patients). The gene discussed is CD4; the disease is infection.