TABLE 3.
Phenotypic traits of S. sonnei, S. flexneri and EIEC, in percentage of positives.
| Phenotypic trait | S. sonnei (n = 232) | S. flexneri (n = 104) | EIEC (n = 64) |
| Motilitya | 0 | 0 | 30 |
| LDCa | 0 | 0 | 45 |
| ODC | 98 | 0 | 41 |
| ADH | 2 | 5 | 6 |
| Esculina | 0 | 0 | 8 |
| Indole | 0 | 16 | 77 |
| Gas from D-glucose | 0 | 0 | 72 |
| Indole + gas from D-glucosea | 0 | 0 | 59 |
| ONPG | 90 | 1 | 89 |
| Fermentation of: | |||
| D-glucose | 99 | 99 | 100 |
| Lactose | 2 | 1 | 69 |
| D-sucrose | 2 | 0 | 44 |
| D-xylose | 39 | 8 | 84 |
| D-mannitol | 81 | 96 | 97 |
| Dulcitol | 0.4 | 0 | 34 |
| D-sorbitol | 0.4 | 5 | 88 |
| Salicina | 0 | 0 | 5 |
| D-trehalose | 100 | 82 | 97 |
| D-raffinose | 0.4 | 8 | 45 |
| Glycerol | 9 | 3 | 50 |
aTests used for distinction of Shigella spp. from E. coli that are by definition negative for Shigella spp.