TABLE 1.
Heterogeneity within serotypes of 342 pneumococcal isolates from young children
| Serogroup | Total no. of isolates | No. of STs | ST(s) (no. of isolates) |
|---|---|---|---|
| 1 | 3 | 2 | 227 (2), 305 (1) |
| 2 | 1 | 1 | 1519a (1) |
| 3 | 13 | 3 | 180 (11), 1119 (1), 1511a (1) |
| 4 | 3 | 3 | 244 (1), 867 (1), 899 (1) |
| 5 | 1 | 1 | 1522a (1) |
| 6b | 13 | 11 | 376 (2), 90 (2), 138 (1), 460 (1), 639 (1), 1060 (1), 1165 (1), 1379 (1), 1398a (1), 1517a (1), 1518a (1) |
| 6A | 25 | 8 | 460 (8), 376 (7), 473c (5), 62c (1), 90 (1), 690 (1), 1190 (1), 1402a (1) |
| 6B | 38 | 24 | 1092 (6), 315 (3), 385 (3), 138 (2), 146 (2), 384 (2), 1212 (2), 1391 (2), 90 (1), 147 (1), 176 (1), 439c (1), 473c (1), 641 (1), 678d (1), 1060 (1), 1177 (1), 1394a (1), 1509a (1), 1536a (1), 1538a (1), 1539a (1), 1845a (1), 1891a (1) |
| 7 | 7 | 3 | 191 (5), 1395a (1), 1535a (1) |
| 9A | 1 | 1 | 643 (1) |
| 9L | 1 | 1 | 66 (1) |
| 9N | 3 | 2 | 66 (1), 632 (2) |
| 9V | 12 | 6 | 156c (6), 643 (2), 66 (1), 166 (1), 1269 (1), 1520a (1) |
| 10 | 2 | 2 | 816 (1), 1513a (1) |
| 11A | 10 | 5 | 62c (6), 1510a (1), 1530a (1), 1841a (1), 1889a (1) |
| 12F | 7 | 3 | 220 (5), 218 (1), 246 (1) |
| 14 | 35 | 15 | 13 (17), 124 (4), 156c (2), 15 (1), 67c (1), 125 (1), 132 (1), 236c (1), 656 (1), 671 (1), 689 (1), 1508a (1), 1528a (1), 1529a (1), 1537a (1) |
| 15 | 7 | 2 | 199c (6), 1757a (1) |
| 16 | 5 | 2 | 1390a (3), 659 (2) |
| 18B | 3 | 1 | 113 (4) |
| 18C | 16 | 7 | 113 (5), 1073 (5), 1524a (2), 496 (1), 638 (1), 1515a (1), 1516a (1) |
| 19A | 13 | 5 | 199c (9), 37 (1), 153d (1), 193 (1), 274 (1) |
| 19B | 1 | 1 | 1843a (1) |
| 19F | 55 | 31 | 236c (10), 81c (6), 271 (4), 251 (2), 257 (2), 425 (2), 473 (2), 1512a (2), 1521a (2), 1843a (2), 43 (1), 67c (1), 83c (1), 177 (1), 193 (1), 199c (1), 320 (1), 651 (1), 1258 (1), 1388a (1), 1392a (1), 1396 (1), 1459 (1), 1523 (1), 1531a (1), 1533a (1), 1534a (1), 1842a (1), 1846a (1), 1890a (1), 1891a (1) |
| 22F | 4 | 1 | 433 (4) |
| 23A | 2 | 1 | 1839a (2) |
| 23B | 2 | 2 | 1448 (1), 1847a (1) |
| 23F | 34 | 17 | 37c (10), 81c (8), 1389a (2), 33 (1), 36 (1), 83c (1), 355 (1), 439c (1), 626 (1), 629 (1), 802 (1), 1092 (1), 1393a (1), 1397a (1), 1532a (1), 1837a (1), 1838a (1) |
| 24F | 1 | 1 | 72 (1) |
| 29 | 6 | 1 | 558c (6) |
| 31 | 3 | 1 | 568 (3) |
| 33F | 2 | 2 | 636 (1), 1514a (1) |
| 34 | 1 | 1 | 547 (1) |
| 35 | 6 | 4 | 558c (3), 65 (1), 452 (1), 498 (1) |
| 38 | 3 | 1 | 393 (3) |
| NTe | 3 | 3 | 568 (1), 1186 (1), 1844a (1) |
a
These STs were newly identified within these studies and were deposited within the MLST database.
b
Factor data were not available for all of the pneumococcal strains. Strains without type-specific data are listed according to their serogroup.
c
STs identified in this study that express more than one capsule type.
d
STs identified in this study that display a capsular switch when compared to strains entered in the MLST database.
e
NT, nontypeable.