Table 2. Percentage of subjects 11 to 55 years of age with human serum bactericidal assay (hSBA) titres ≥4 and ≥8, and hSBA geometric mean titres (95% confidence interval), for the entire study population.
| Serogroup, % (95% confidence interval) | ||||
|---|---|---|---|---|
| A (N = 986) | C (N = 986) | W (N = 985) | Y (N = 986) | |
| hSBA titres ≥4 | 15% (12-17%) | 48% (45-51%) | 76% (73-79%) | 44% (40-47%) |
| hSBA titres ≥8 | 9% (7-11%) | 34% (31-37%) | 74% (71-77%) | 36% (33-39%) |
| GMT, µg/mL | 2.56 (2.45-2.67) | 5.14 (4.78-5.52) | 22.63 (20.47-25.01) | 5.28 (4.87-5.72) |
hSBA, human serum bactericidal assay; GMT, hSBA geometric mean titre.