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. Author manuscript; available in PMC: 2015 Apr 21.
Published in final edited form as: J AIDS Clin Res. 2015 Jan 23;6(2):419. doi: 10.4172/2155-6113.1000419

Figure 1. HIV-positive serum antibody and opsonophagocytic titers.

Figure 1

HIV-positive volunteers were immunized with PPV23. Serum samples were obtained on days 0 and 30 post-immunization. Volunteers were classified according to CD4 count, <200 or >200 cells, and pre-vaccination HAART use. All samples were tested for PPS14 and PPS23F-specific IgG and IgM titers by ELISA expressed as μg/ml (n=43) (A–D) and functional activity by OPA expressed as opsonophagocytic titer (PPS14 n=42, PPS23F n=39) (E–F). Data are mean ± standard error of the mean. *p<0.05, **p<0.01, ***p<0.001.