Table 1.
Distribution of sequence types (STs) among group B meningococcal isolates.
| Isolates, % | |||
|---|---|---|---|
| ST complex (lineage) | California(n p 55) | Maryland(n p 50) | Multicentera(n p 38) |
| ST-32, clonalb (ET-5) | 31 | 6 | 3 |
| ST-32, otherc (ET-5) | 33 | 26 | 29 |
| ST-41/44 (lineage III) | 13 | 26 | 34 |
| ST-162 | 6 | 14 | 5 |
| ST-269 | 0 | 10 | 3 |
| Otherd | 17 | 18 | 26 |
a
Seven isolates from the multicenter collection originated in California and are grouped with the California isolates (see Methods).
b
Defined as ST-32; porA VR1 and VR2 of 7,16–20; and porB of 3–24 and fetA of 3-3.
c
ST-32 isolates with combinations of porA, porB, and fetA genotypes different from that of the clonal group.
d
No single ST complex comprised >5% of isolates in this category.