Number and types of organisms isolated with or without repeated throat infection
| Isolates | Number of isolates (N) | Total (204 samples) | p Value | |
| No history of repeated throat infection (112samples) | History of repeated throat infection (92 samples) | |||
| Gram positive bacteria | ||||
| Viridans streptococci | 86 (76.7) | 74 (80.4) | 160 (78.4) | 0.57 |
| Streptococcus pneumoniae | 6 (5.3) | 28 (30.4) | 34 (16.6) | 0.21 |
| Streptococcus pyogenes | 2 (1.7) | 9 (8.0) | 11 (5.3) | 0.76 |
| β-haemolytic streptococci (non-Group A) | 8 (7.1) | 10 (8.9) | 18 (8.8) | 0.89 |
| Staphylococcus aureus | 6 (5.3) | 24 (21.4) | 30 (14.7) | 0.36 |
| Corynebacterium diphtheriae | 2 (1.7) | 5 (4.4) | 7 (3.4) | 0.87 |
| Total | 110 | 150 | 260 | |
| Gram negative bacteria | ||||
| Moraxella spp | 53 (47.3) | 40 (43.4) | 93 (45.5) | 0.71 |
| Neisseria meningitidis | 0 (0) | 3 (2.6) | 3 (1.4) | - |
| Klebsiella pneumoniae | 3 (2.6) | 7 (6.2) | 10 (4.9) | 0.82 |
| Pseudomonas aeruginosa | 2 (1.7) | 1 (0.8) | 3 (1.4) | 0.95 |
| Enterobacter spp | 2 (1.7) | 1 (0.8) | 3 (1.4) | 0.95 |
| Citrobacter spp | 2 (1.7) | 3 (2.6) | 5 (2.4) | 0.95 |
| Acinetobacter spp | 1 (0.8) | 4 (3.5) | 5 (2.4) | 0.89 |
| Haemophilus influenzae | 2 (1.7) | 5 (4.4) | 7 (3.4) | 0.87 |
| Haemophilus parainfluenzae | 1 (0.8) | 4 (3.5) | 5 (2.4) | 0.89 |
| Total | 66 | 68 | 134 | |
Figures in parenthesis depict %.