TABLE 2.
Colony color of isolates on each test medium employed
| Bacteria | No. of strains tested | No. of strains in CT-SMAC medium that were colorlessa | No. of strains in CT-SSMAC medium that were:
|
||
|---|---|---|---|---|---|
| Red to pink | β-Galactosidase negative and colorless | β-Galactosidase positive and colorlessa | |||
| Escherichia coli O157:H7 and O157:NM | 19 | 19 (100)b | 0 (0)− | 0 (0) | 19 (100) |
| Hafnia alvei | 2 | 2 (100) | 0 (0) | 0 (0) | 2 (100) |
| Oxidase-negative strains | 25 | 25 (100) | 21 (84) | 2 (8) | 2 (8) |
| Pseudomonas aeruginosa | 10 | 10 (100) | 0 (0) | 10 (100) | 0 (0) |
| Oxidase-positive strains | 64 | 64 (100) | 0 (0) | 59 (92) | 5 (8) |
| All strains other than Escherichia coli | 101 | 101 (100) | 21 (21) | 71 (70) | 9 (9) |
a
Including light pink strains.
b
The values in parentheses are percentages.