Table 3.

α C Protein-Specific IgM and IgG Concentrations in Acute and Convalescent Sera from Women with Invasive Disease Caused By α C-Expressing Strains of GBS

Patient	Age (yr)/ethnicity	Diagnoses	Days of documented bacteremia	CPSa type	Days after diagnosis	α C-specific IgM (ng/ml)	α C-specific IgG (ng/ml)
1	26/Black	Bacteremia, chorioamnionitis at delivery of healthy term infant	1	Ia	0	896	79
					2	712	48
					23	742	97
2	30/Asian	Bacteremia, chorioamnionitis at delivery of healthy term infant	2	Ib	2	683	1245
					23	1264	6433
3	20/Black	Endocarditis with mitral ring abscess; saline abortion 12 days prior to evaluation	1b	IV	4	788	620
					15	616	673
					30	1364	1459
					51	209	1061
4	18/White	Septic pelvic vein thrombophlebitis; retained placenta (27 days) following delivery of healthy 32 week neonate; insulin-dependent diabetes	3	Ib	16	8808	771,748
5	36/White	Osteomyelitis of cervical vertebrae diagnosed 87 days after delivery of healthy term infant	0	Ia	49	405	1802

^aCPS, capsular polysaccharide

^bBlood culture was not reassessed until 9 days after initial positive cultures (5 of 5) for GBS on the day of admission