Table 4.
The antibiotic susceptibility patterns, pilus distribution and presence of ISSag5 in all serotype III GBS isolates.
| No. (%) of All 190 Type III GBS Isolates | ||||||
|---|---|---|---|---|---|---|
| ISSag 5 | Presence of ISSag 5 (Total n = 33, 17.4%) | Absence of ISSag 5 (Total n = 157, 82.6%) | ||||
| Pilus genes | PI-1 + PI-2a | PI-1 + PI-2b | PI-2b | PI-1 + PI-2a | PI-1 + PI-2b | PI-2b |
| Total n (%) | 4 (2.1%) | 29 (15.3%) | 0 (0) | 46 (24.2%) | 0 (0) | 111 (58.4%) |
| Sequence types | ||||||
| ST-17 (total n = 128) | 0 (0) | 24 (82.8) | - | 0 (0) | - | 104 (93.7) |
| Non-ST17 (total n = 62) | 4 (100) | 5 (17.2) | - | 46 (100) | - | 7 (6.3) |
| Sources | ||||||
| Neonatal invasive diseases | 1 (25.0) | 19 (65.5) | - | 12 (26.1) | - | 86 (77.5) |
| Adult invasive diseases | 1 (25.0) | 6 (20.7) | - | 29 (63.0) | - | 11 (9.9) |
| Maternal colonization | 2 (50.0) | 4 (13.8) | - | 5 (10.9) | - | 14 (12.6) |
| ICESag37 | ||||||
| Presence | 0 (0) | 3 (10.3) | - | 8 (17.4) | - | 105 (94.6) |
| Absence | 4 (100) | 26 (89.7) | - | 38 (82.6) | - | 6 (5.4) |
| Antibiotic resistance patterns (No. (%) of resistant GBS isolates) | ||||||
| Ery (R) + Clin (R) | 0 (0) | 7 (24.1) | - | 15 (32.6) | - | 106 (95.5) |
| Ery (S) + Clin (S) | 4 (100) | 15 (51.7) | - | 23 (50.0) | - | 3 (2.7) |
| Ery (R) + Clin (S) | 0 (0) | 7 (24.1) | - | 3 (6.5) | - | 0 (0) |
| Ery (S) + Clin (R) | 0 (0) | 0 (0) | - | 5 (10.9) | - | 2 (1.8) |
Ery: erythromycin; Clin: clindamycin; R: resistant; S: susceptible. All GBS isolates are susceptible to vancomycin, teicoplanin, ampicillin, penicillin, and cefotaxime; - means zero.