Table 2. Clonal distribution of PI-2-containing Streptococcus pneumoniae isolates, Atlanta, Georgia, USA, 1994–2006*.
| Serotype | CC | ST | No. PI-2-containing isolates |
|
|---|---|---|---|---|
| 1999 | 2006 | |||
| 1 | 304 | 304 | 1 | 1 |
|
|
306 |
227 (DLV) |
3 |
– |
| 7F | 191 | 191 | 3 | 28 |
|
|
218 |
1176 (DLV) |
– |
3 |
| 11A |
53 |
62 |
2 |
3 |
| 19A | 2090 | 1339 (SLV) | 1 | 9 |
| 2268 (DLV) | – | 3 | ||
|
|
271 |
320 (SLV) |
– |
27 |
| 19F | 271 | 271 | 1 | – |
| 236 (SLV) | 3 | 1 | ||
| 3039 (SLV) | – | 1 | ||
| 651 (DLV) | 3 | 2 | ||
| 251 | 251 | 1 | 1 | |
| 654 (SLV) | 4 | 1 | ||
| 1258 (DLV) | 2 | – | ||
*CC, clonal complex; ST, sequence type; PI, pilus islet; DLV, double-locus variant; SLV, single-locus variant.