Table 1.
Numbers of invasive GBS strains and colonized GBS strains by capsular polysaccharide capsule (CPS) typing and age.
| CPS | No. (%) of cases |
||||||
|---|---|---|---|---|---|---|---|
| EOD | LOD | 91 days to 14.9 years | 15–50 years (invasive) | 15–50 years∗ (colonized) | >50 years | Total | |
| Ia | 10 (29.4) | 9 (12.0) | 3 (16.7) | 6 (26.1) | 7 (7.0) | 6 (8.0) | 41 (12.6) |
| Ib | 7 (20.6) | 2 (2.7) | 3 (16.7) | 5 (21.7) | 10 (10.0) | 14 (18.7) | 41 (12.6) |
| II | 2 (5.9) | 1 (1.3) | 0 (0) | 2 (8.7) | 6 (6.0) | 5 (6.7) | 16 (4.9) |
| III | 10 (29.4) | 60 (80.0) | 7 (38.9) | 2 (8.7) | 25 (25.0) | 7 (9.3) | 111 (34.2) |
| V | 2 (5.9) | 2 (2.7) | 2 (11.1) | 4 (17.4) | 16 (16.0) | 15 (20.0) | 41 (12.6) |
| VI | 3 (8.8) | 1 (1.3) | 3 (16.7) | 4 (17.4) | 35 (35.0) | 28 (37.3) | 74 (22.8) |
| VII | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 1 (1.0) | 0 (0) | 1 (0.3) |
| Total | 34 | 75 | 18 | 23 | 100 | 75 | 325 (100) |
EOD, early-onset disease; LOD, late-onset disease. ∗Except for the age group of 15–50 years, all other age groups were invasive GBS strains.