Viral load in response to immunoglobulin treatment and T-cell counts of patients. A, Viral load of patients and immunoglobulin infusions. Blue arrowheads signify monthly dosage of high dose intravenous immunoglobulin infusions (1 g/kg per month), whereas brown arrowheads signify low dose subcutaneous (0.5 mg/kg) and green arrowheads indicate high dose subcutaneous immunoglobulin infusions (1 g/kg) per month. Stacked blue arrowheads indicate 2x dosage, whereas partially superimposed blue arrowheads indicate 1.5x dosage. NO IG (yellow arrow) indicates no immunoglobulin infusions. The high and low viral titers were rounded to >1 000 000 and <250 copies/mL, respectively. B, Mean total and naïve CD4⁺ T-cell counts of patients during treatment. C, Mean total and naïve CD8+ T-cell counts during treatment.