CD4 and infective vaginitis: We found no alterations in absolute CD4+ and CD8+ T cell counts in either newborn or infant macaques (Supplemental Figure 4, A and B) and with no CD4/CD8 ratio inversion at 2–3 weeks as reported in adult rhesus macaques after vaginal infection with SHIVSF162P3 (38) (Supplemental Figure 4C).