A. Switched Memory B cell subset distribution (%)
Patient groups PPS14- (Unselected) PPS14+ (Selected) PPS23F- (Unselected) PPS23F+ (Selected)
Group A (CD4>200) 15.7±1.6 25.69±2.75*** 15.74±1.68 29.62±2.89***
Group B  (CD4<200) 12.76+2.81 21.78+6.19 12.79±3.13 27.59±5.77*
B. IgM Memory B cell subset distribution
Patient groups PPS14- (Unselected) PPS14+ (Selected) PPS23F- (Unselected) PPS23F+ (Selected)
Group A (CD4>200) 9.30±1.39 32.84±3.88*** 9.23±1.36 39.18±3.12***
Group B  (CD4<200) 8.16±1.79 31.34±4.71** 7.81±1.51 42.87±5.43***
C. Naive B cell subset distribution
Patient groups PPS14- (Unselected) PPS14+ (Selected) PPS23F- (Unselected) PPS23F+ (Selected)
Group A (CD4>200) 74.98±2.38 41.46±3.56*** 76.24±2.48 31.25±2.66***
Group B  (CD4<200) 79.0±3.81 46.87±6.34*** 79.39±3.88 26.23±6.97***
Data are mean ± standard error of the mean. * indicates significant difference in the PPS-selected population post vaccination (day 7) levels compared to unselected B cells within a group. Pre to post vaccination changes in a single group were compared using paired t-test and between groups were compared using ANCOVA.*p<0.05, **p<0.01, ***p<0.001.
Table 4: Unselected (PPS-) versus PPS-selected (PPS+) CD19+ B cell subset percentages (%) in long term HAART cohort’s 7 days post PPV23 vaccination.
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