Table 2. Absolute and relative frequencies of 24 virulence genes screened by PCR in Salmonella Heidelberg isolates.
| Gene Function | Gene | Absolute frequencies (n=126) | Relative frequencies (%) | |
|---|---|---|---|---|
| Fimbriae | sefA | 0 | 0 | |
| lpfA | 126 | 100 | ||
| lpfC | 107 | 84.9 | ||
| agfA | 126 | 100 | ||
| pefA | 4 | 3.17 | ||
|
| ||||
| TTSS | Structure | sipB | 91 | 72.2 |
| invA | 126 | 100 | ||
| orgA | 84 | 66.7 | ||
| prgH | 65 | 51.6 | ||
| spaN | 103 | 81.7 | ||
|
| ||||
| Effector protein | avrA | 124 | 98.4 | |
| sopE | 112 | 88.9 | ||
| sopB | 123 | 97.6 | ||
| sivH | 126 | 100 | ||
| sifA | 108 | 85.7 | ||
|
| ||||
| Regulatory protein | hilA | 84 | 66,6 | |
|
| ||||
| Survival inside cells (macrophages) | pagC | 120 | 95.2 | |
| spiA | 120 | 95.2 | ||
| msgA | 126 | 100 | ||
| tolC | 126 | 100 | ||
|
| ||||
| Plasmid | spvB | 1 | 0.79 | |
|
| ||||
| Iron metabolism | iroN | 112 | 88.9 | |
| sitC | 100 | 79.4 | ||
|
| ||||
| Toxins | cdtB | 11 | 8.73 | |