TABLE 2

Demographic, vaccination history, and vaccine response information for matched AE and VI groups

CharacteristicaValue
LLRs (n = 33)LLR-VIs (n = 66)SRs (n = 8)SR-VIs (n = 16)
Ethnicity [no. (%)]
    EA20 (60.6)39 (59.1)5 (62.5)12 (75.0)
    AA2 (6.0)6 (9.0)1 (12.5)2 (12.5)
    H1 (3.0)7 (10.6)0 (0)0 (0)
    Mixed10 (30.3)14 (21.2)2 (25.0)2 (12.5)
Sex [no. (%)]
    M29 (87.9)59 (89.4)6 (75)10 (62.5)
Age at sample collection (yr)
    Avg (SD)30.5 (6.6)29.8 (6.6)36.4 (7.2)33.0 (6.2)
    Median30283734
    Range21–4821–4821–4421–41
Yr since last vaccination [no. (%)]
    Avg (SD)0.5 (0.2)0.5 (0.2)0.6 (0.2)0.6 (0.2)
    Median0.50.50.70.6
    Range0.2–0.90.2–1.30.3–0.90.1–0.9
No. of vaccinations
    Avg (SD)4.8 (2.0)5.0 (1.6)5.5 (1.9)5.3 (1.3)
    Median4565.5
    Range1–93–83–83–8
Plasma anti-PA IgG (μg/ml)
    Avg (SD)115.6 (113.4)172.4 (353.6)59.1 (60.3)199.3 (471.2)
    Median86.572.037.273.2
    Range0.1–395.81.1–2494.33.1–173.60.1–1951.1
LT neutralization (% viability)
    Avg (SD)49.8 (34.6)36.9 (29.1)48.4 (37.5)54.0 (38.8)
    Median50.324.850.763.2
    Range2.6–112.70.6–106.37.9–103.62.0–102.4
  • a EA, European American; AA, African American; H, Hispanic; A, Asian; M, male.