Parameters Group A (CD4>200) Group B (CD4<200)
n value 29 10
Age(years) 49 50
Sex, no. male/no. female 24/5 10/0
Race: White/Black/Hispanic/Asian 21/8/0/0 4/5/1/0
HAART status    
At the time of primary vaccination No No
At the time of re-vaccination (current study) ≥5 years ≥5 years
Viral Load    
At the time of revaccination (current study) ≤40 copies/ml ≤40 copies/ml       
PPV vaccination history    
Primary Vaccination Yes (≥5 years ago) Yes (≥5 years ago)
Revaccinated (for the current study) Yes Yes
CD4 count (cells/mm3)    
Nadir CD4 history ≤200 ≤200
CD4 count at the time
of re-vaccination
≥200 ≤200
Total CD19+ B cells¥
Percentage (%)
Cells count (cells/µl)
  8.5 ± 0.6
148±15
  10.8 ± 1.4
151±33
Unselected CD19+ B cell subset percentage (%)¥    
1. Switched Memory (CD27+ IgM-)
2. IgM memory (CD27+ IgM+)
3. Naive (CD27-IgM +/-)
15.74 ± 1.68
9.23 ± 1.39
76.44 ± 2.48
12.79 ± 3.13
7.81 ± 1.51
79.39 ± 3.88
Unselected CD19+ B cell subset count (cells/µl) ¥  €
1.Switched Memory (CD27+IgM-)
2.IgM memory (CD27+ IgM+)
3.Naive (CD27-IgM +/-)
  23 ± 3
13±2
114 ±14
  20 ± 6
10± 3
122 ± 29
¥ Data are represented as mean ± standard error of the mean (SEM). € Cell counts of specific cell population in donor groups are reported as the average value of = [(percentage of specific cell population) * total lymphocytes/ml] for that group
Table 1: Baseline Characteristics of HIV-positive individuals recruited for the current study.
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