Table 2.
Bacterial nasopharyngeal carriage in grommet versus comparison groups
| Bacteria | Grommet group n = 316 (%) | Comparison group n = 137 (%) | P value |
|---|---|---|---|
| NP specimen culture positive for one or more pathogens | 275 (87) | 105 (77) | P < 0.01 |
| Haemophilus influenzae: total (%) | 195 (62) | 58 (42) | P < 0.05 |
| Streptococcus pneumoniae: total (%) | 135 (43) | 40 (29) | P < 0.05 |
| VT (PCV7) | 36 (11) | 11 (8) | NS |
| NVT | 98 (31) | 29 (21) | P < 0.05 |
| Moraxella catarrhalis: total (%) | 181 (57) | 68 (50) | NS |
| NP specimen culture positive for Single pathogen only | 102 (32) | 58 (42) | P < 0.05 |
| NTHi | 57 (18) | 21 (15) | NS |
| S. pneumoniae | 13 (4) | 5 (4) | NS |
| M. catarrhalis | 32 (10) | 32 (23) | P < 0.01 |
| NP specimen culture positive for Two pathogens | 128 (41) | 33 (24) | P < 0.01 |
| S. pneumoniae + NTHi | 30 (9) | 11 (8) | NS |
| S. pneumoniae + M. catarrhalis | 41 (13) | 10 (7) | NS |
| M. catarrhalis + NTHi | 57 (18) | 12 (9) | P < 0.05 |
| NP specimen culture positive for all Three pathogens: NTHi + S. pneumoniae + M. catarrhalis | 51 (16) | 14 (10) | NS |
NP, nasopharyngeal; NS, not susceptible; NTHi, non-typeable H. influenzae; NVT, S. pneumoniae serotypes not included in PCV7; VT, S. pneumoniae serotypes included in PCV7.