Table 1.
No. (%) of Streptococcus pneumoniae isolates associated with necrotizing pneumonia before (period 1; 1 January 1997–31 December 2000) and after (period 2; 1 January 2001–31 March 2006) the introduction of the 7-valent pneumococcal conjugate vaccine, by serotype.
| Serotype | Period 1 (n = 5) | Period 2 (n = 33) |
|---|---|---|
| Vaccine | ||
| 6B | 2 (40) | … |
| 19F | 1 (20) | … |
| 4 | … | 1 (3) |
| Nonvaccine | ||
| 1 | 1 (20) | … |
| 6A | 1 (20) | … |
| 3 | … | 2 (6) |
| 7 | … | 11 (33) |
| 8 | … | 1 (3) |
| 17 | … | 1 (3) |
| 19 | … | 4 (3) |
| 19A | … | 4 (12) |
| NG | … | 1 (12) |
| NT | … | 2 (6) |
NOTE. NG, no growth during serotyping; NT, nontypeable.