Table 7 Summary of the performance of the biochemical, chromogenic and PCR methods for Cronobacter spp. identity confirmation.
Test Method | Number of confirmed isolates | Number of false positives | Number of false negatives |
|---|---|---|---|
API 20E | 42 | 13 | - |
α-MUG | 34 | 5 | - |
DFI | 32 | 3 | - |
EsPM | 33 | 7 | 3 |
Glu A PCR primers | 26 | 3 | 6 |
Glu B*PCR primers | 3 | 1 | 3 |
SG PCR primers | 36 | 10 | 2 |
SI PCR primers | 36 | 10 | 3 |
Ska PCR primers | 25 | - | 4 |
OmpA PCR primers | 27 | - | 2 |
Zpx 94 bp PCR primers | 32 | 13 | 10 |
Zpx 350 bp PCR primers | 32 | 6 | 3 |