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Table 1 Serotypes associated with sequence types (ST) found 4 or more times among 367 S. pneumoniae carriage isolates in children 3 months - 7 years from Massachusetts communities in 2010–2011

From: Stability of the pneumococcal population structure in Massachusetts as PCV13 was introduced

ST N (%) Serotypes (N)
199 35 (9.5) 15B/C (33), 19A (2)
62 21 (5.7) 11A (21)
320 19 (5.2) 19A (19)
433 16 (4.4) 22F (16)
63 14 (3.8) 15A (10), 15B/C (3), 19A (1)
558 14 (3.8) 35B (13), 29 (1)
338 13 (3.5) 23A (13)
432 12 (3.3) 21 (12)
180 10 (2.7) 3 (10)
498 10 (2.7) 35F (10)
695 8 (2.2) 19A (8)
3280 8 (2.2) 15B/C (8)
439 7 (1.9) 23B (7)
547 7 (1.9) 34 (7)
816 7 (1.9) 10A (7)
1390 7 (1.9) 6C (7)
138 6 (1.6) 6C (6)
659 6 (1.6) 16F (6)
162 5 (1.4) 15B/C (5)
7490 5 (1.4) 21 (5)
36 4 (1.1) 23B (4)
191 4 (1.1) 7F (4)
632 4 (1.1) 9N (4)
1262 4 (1.1) 15B/C (4)
1876 4 (1.1) 6C (3), 6A (1)
1924 4 (1.1) 17F (4)