Table 5.

Paired association between PCV-13 serotype-specific IgG and OI

	Serotype 4 N = 98	Serotype 6B N = 100	Serotype 14 N = 100	Serotype 23F N = 100
≥ 2-fold increase in pneumococcal IgG and functional OI	46 (47)	57 (57)	32 (32)	56 (56)
≥ 2-fold increase in pneumococcal IgG, but not functional OI	4 (4)	6 (6)	8 (8)	3 (3)
≥ 2-fold increase in functional OI, but not pneumococcal IgG	28 (29)	19 (19)	15 (15)	17 (17)
< 2-fold increase in both pneumococcal IgG and functional OI	20 (20)	18 (18)	45 (45)	24 (24)

Data are reported as n (%)

IgG immunoglobulin G, OI opsonization index, PCV-13 13-serotype pneumococcal conjugate vaccine