Table 4.

Antibody levels to N. gonorrhoeae MS11 in serum and urethral swabs from noninfected and infected males

SampleAntibody isotypeMedian antibody level (ng/ml) (range) [n]
Visit 1Visit 2
NoninfectedN. gonorrhoeaeinfectedNoninfectedN. gonorrhoeae infected
SerumIgA1621 (86–11,728) [13]719 (118–7,161) [58]636 (300–3,957) [4]845 (242–4,319) [20]
IgA20 (0–1,319) [13]179 (0–3,392) [58]97 (0–328) [4]178 (0–1,477) [20]
IgG23,736 (9,177–156,400) [13]19,429 (4,400–100,828) [58]28,720 (9,538–56,338) [4]20,981a (13,349–117,894) [20]
Urethral swabIgA10 (0–99) [14]0 (0–170) [36]0 [5]0 (0–128) [13]
IgA277 (0–354) [14]213 (0–432) [36]0 [5]0 (0–300) [13]
IgG0 (0–442) [14]119 (0–685) [36]0 [5]105 (0–450) [13]
  • a P = 0.0476 (Wilcoxon signed-rank test) compared with IgG antibody levels at visit 1.