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Proportions of those failing to achieve robust/above-average responses at T3 and T5, using 2 endpoints VE90% (vaccine efficacy of 90% in preventing symptomatic infections) and OCOnAbs (optimal cut-off for binding Ab calculated for a nAb titer ≥ 1:40) according to the CD4 count (A) and to the CD4/CD8 ratio (B) at the time of first vaccination.
