Table 1
Distribution of antibiotic resistance in nasopharyngeal S pneumoniae in each of the three study areas
| Tetracycline treated (n = 143) | Azithromycin treated (n = 194) | Untreated (n = 107) | |
|---|---|---|---|
| *All azithromycin resistant isolates were also resistant to tetracycline. | |||
| MIC standard values for resistance (as per NCCLS) shown in parentheses. | |||
| S pneumoniae carriage, (%) | 126 (88%) | 163 (84%) | 91 (85%) |
| Antibiotic resistant S pneumoniae (% of isolates showing resistance) | |||
| Tetracycline (⩾8 μg/ml) | 39 (31%) | 28 (17%) | 15 (16%) |
| Azithromycin* (⩾2 μg/ml) | 0 (0%) | 5 (3%) | 0 (0%) |
| Trimethoprim-sulfamethoxazole (⩾4 & 76 μg/ml) | 36 (29%) | 39 (24%) | 25 (27%) |
| Penicillin (⩾2 μg/ml) | 0 (0%) | 0 (0%) | 0 (0%) |
