| 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