Table 8.
Transition pattern according to time period of major STs in housekeeping genes and antigenic determinant genes
| Time periods | Housekeeping genes |
Antigenic determinant genes |
||||
|---|---|---|---|---|---|---|
| Major ST | Genotype profilea | Frequency (%) | Major ST | Genotype profileb | Frequency (%) | |
| Tohama I | 1 | 1,1,1,1,1,1,1 | – | – | 2,1,2,1,1,2,1,2,2,2 | – |
| Old (1968/1975) | 1 | 1,1,1,1,1,1,1 | 80 | 6 | 2,1,1,1,1,2,1,2,2,2 | 100 |
| 1999 ∼ 2008 | 2 | 1,1,1,3,1,1,1 | 96.9 | 1 | 1,1,1,1,2,2,1,2,2,2 | 87.5 |
| Outbreak in 2009 | 2 | 1,1,1,3,1,1,1 | 100 | 2 | 1,2,1,1,1,2,1,2,2,2 | 58.3 |
a
Gene order of housekeeping genes: GlyA, Adk, Icd, TyrB, PepA, Pgm, FumC.
b
Gene order of antigenic determinant genes: PtxS1, Prn, FHA, Fim2, Fim3, OmpQ, BapC, CyaA, Vag8, TcfA.