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VT1 and VT2 titers in culture filtrates of 65 clinical VTEC isolates by Verotox-F assay
| VT type by Verotox-F assay | No. of strains | VT titera
|
||
|---|---|---|---|---|
| Range | Median | Geometric mean | ||
| VT1 | 17 | 8–512 | 64 | 47 |
| VT2 | 31 | 4–512 | 32 | 26 |
| VT1 + VT2 | 17 | 8–128 (VT1) | 32 | 32 |
| 4–512 (VT2) | 32 | 35 | ||
The VT titer by the Verotox-F assay was defined as the reciprocal of the highest filtrate dilution that caused agglutination of the respective latex reagent overnight.
