CD4 and infection: As shown in Table 1, the amounts of proliferated total NK cells were positively associated with HIV-1 viral load in the first (r = 0.50, P = 0.041), third (r = 0.48, P = 0.040), and twelfth month (r = 0.66, P = 0.002) of infection and inversely correlated with CD4 T-cell counts but only in the first month of infection (r = −0.65, P = 0.005).