Antibiotics | Disc potency | Â | Colonizing GBS isolates | ||
---|---|---|---|---|---|
Newborn`s body sites | Susceptible, n(%) | Intermediate, n(%) | Resistant, n(%) | ||
Penicillin | 10units | Nasal nare (n=31) | 29 (93.5) | 0 (0.0) | 2 (6.5) |
 |  | Umbilicus (n=29) | 26 (89.7) | 0 (0.0) | 3 (10.3) |
 |  | Ear (n=21) | 18 (85.7) | 0 (0.0) | 3 (14.3) |
Ampicillin | 10μg | Nasal nare (n=31) | 29 (93.5) | 0 (0.0) | 2 (6.5) |
 |  | Umbilicus (n=29) | 28 (96.6) | 0 (0.0) | 1 (3.4) |
 |  | Ear (n=21) | 20 (95.2) | 0 (0.0) | 1 (4.8) |
Erythromycin | 15μg | Nasal nare (n=31) | 24 (77.4) | 2 (6.5) | 5 (16.1) |
 |  | Umbilicus (n=29) | 21 (72.4) | 1 (3.4) | 7 (24.2) |
 |  | Ear (n=21) | 17 (80.9) | 0 (0.0) | 4 (19.1) |
Clindamycin | 2μg | Nasal nare (n=31) | 24 (77.4) | 1 (3.2) | 6 (19.4)a |
 |  | Umbilicus (n=29) | 22 (75.9) | 2 (6.9) | 5 (17.2)a |
 |  | Ear (n=21) | 16 (76.2) | 2 (9.5) | 3 (14.3)a |
Azitromycin | 15μg | Nasal nare (n=31) | 27 (87.1) | 1 (3.2) | 3 (9.7) |
 |  | Umbilicus (n=29) | 22 (75.9) | 4 (13.8) | 3 (10.3) |
 |  | Ear (n=21) | 17 (80.9) | 3 (14.3) | 1 (4.8) |
Vancomycin | 30μg | Nasal nare (n=31) | 26 (83.9) | 0 (0.0) | 5 (16.1) |
 |  | Umbilicus (n=29 ) | 25 (86.2) | 0 (0.0) | 4 (13.8) |
 |  | Ear (n=21) | 18 (85.7) | 0 (0.0) | 3 (14.3) |
Ceftriazone | 30μg | Nasal nare (n=31) | 23 (74.2) | 0 (0.0) | 8 (25.8) |
 |  | Umbilicus (n=29) | 22 (75.9) | 0 (0.0) | 7 (24.1) |
 |  | Ear (n=21) | 15 (71.4) | 0 (0.0) | 6 (28.6) |
Ciprofloxacin | 5μg | Nasal nare (n=31) | 29 (93.5) | 0 (0.0) | 2 (6.5) |
 |  | Umbilicus (n=29) | 24 (82.8) | 0 (0.0) | 5 (17.2) |
 |  | Ear (n=21) | 19 (90.5) | 0 (0.0) | 2 (9.5) |
Chloramphenicol | 30μg | Nasal nare (n=31) | 26 (83.9) | 3 (9.6) | 2 (6.5) |
 |  | Umbilicus (n=29) | 24 (82.8) | 3 (10.3) | 2 (6.9) |
 |  | Ear (n=21) | 19 (90.4) | 1 (4.8) | 1 (4.8) |
Tetracycline | 30μg | Nasal nare (n=31) | 8 (25.8) | 3 (9.7) | 20 (64.5) |
 |  | Umbilicus (n=29) | 10 (34.5) | 3 (10.3) | 16 (55.2) |
 |  | Ear (n=21) | 9 (42.9) | 0 (0.0) | 12 (57.1) |