TABLE 2.
Frequencies of anti-OF Ab types in the sera according to the throat culture and SOR of GAS
| Anti-OF Ab type | No. (%)b positive in:
|
|||
|---|---|---|---|---|
| Group I (n = 39) | Group II (n = 34) | Group III (n = 99) | Total (n = 172) | |
| 4 | 17 (43.6) | 9 (26.5) | 42 (42.4) | 68 (39.5) |
| 13 | 5 (12.8) | 1 (2.9) | 10 (10.1) | 16 (9.3) |
| 22 | 5 (12.8) | 22 (22.2) | 27 (15.7) | |
| 28 | 18 (46.2) | 11 (32.4) | 23 (23.2) | 51 (29.7) |
| 78 | 4 (10.3) | 3 (8.8) | 10 (10.1) | 17 (9.9) |
| NTa | 5 (12.8) | 1 (2.9) | 2 (2.0) | 8 (4.7) |
a
A T12 OF-NT strain was used for anti-OF Ab typing.
b
Group I, children GAS positive by SOR; group II, children GAS negative by SOR; group III, children without GAS in the throat culture.