Table 2. Numbers and percentages of oropharyngeal swab (OPS) and saliva samples positive (Ct values ≤36) by direct and culture-amplified qPCRs for N. meningitidis (sodC) and each of 5 capsular groups.
| All Nm (%) | B (%) | C (%) | W (%) | X (%) | Y (%) | BWXY (%) | |
|---|---|---|---|---|---|---|---|
| OPS direct | 126 (12.5) | 17 (1.7) | 0 | 1 (0.1) | 2 (0.2) | 2 (0.2) | 22 (2.2) |
| OPS culture-amplified | 125 (12.4) | 29 (2.9) | 0 | 3 (0.3) | 2 (0.2) | 5 (0.5) | 39 (3.9) |
| OPS direct & culture-amplified combined | 197 (19.6) | 31 (3.1) | 0 | 3 (0.3) | 4 (0.4) | 6 (0.6) | 44 (4.4) |
| Saliva direct | 211 (21.0) | 7 (0.7) | 0 | 0 | 5 (0.5) | 1 (0.1) | 12* (1.2) |
| Saliva culture-amplified | 94 (9.4) | 12 (1.2) | 0 | 1 (0.1) | 3 (0.3) | 1 (0.1) | 17 (1.7) |
| Saliva direct & culture-amplified combined | 263 (26.2) | 14 (1.4) | 0 | 1 (0.1) | 6 (0.6) | 2 (0.2) | 22* (2.2) |
| Both samples and both techniques combined | 363 (36.1) | 36 (3.6) | 0 | 3 (0.3) | 9 (0.9) | 8 (0.8) | 55* (5.5) |
*one saliva sample was positive for both X and Y by direct qPCR.