Table 5.
Typing data from 300 carriers in October 1997 and 333 strains acquired in first term in students previously negative for N meningitidis
| Full typing details | No (%) of carriers | No (%) of newly acquired strains |
|---|---|---|
| C:2a:P1.5,2 (P1.5) | 3 (1.0) | 21 (6.3) |
| W135:NT:P1.3,6 | 8 (2.7) | 19 (5.7) |
| NG:NT:P1.16 | 7 (2.3) | 17 (5.1) |
| NG:NT:NT | 16 (5.3) | 11 (3.3) |
| NG:NT:P1.3,6 | 7 (2.3) | 10 (3.0) |
| NG:NT:P1.5 | 16 (5.3) | 5 (1.5) |
| B:NT:P1.15 | 10 (3.3) | 6 (1.8) |
| B:NT:NT | 9 (3.0) | 1 (0.3) |
| B:NT:P1.9 | 9 (3.0) | 0 (0) |
| NG:NT:P1.15 | 9 (3.0) | 5 (1.5) |
| 29E:NT:P1.5,2 | 8 (2.7) | 6 (1.8) |
| NG:15:P1.6 | 8 (2.7) | 5 (1.5) |
| NG:4:NT | 7 (2.3) | 3 (0.9) |
| X:21:P1.16 | 0 (0) | 9 (2.7) |
| Y:NT:P1.5,2 | 6 (2.0) | 9 (2.7) |
| B:1:P1.13 | 0 (0) | 7 (2.1) |
NG=not grouped; NT=not typed. Group C versus other strains χ2=10.8 (1df). P=0.001.