Table 1.
Staphylococcus aureus biotype distribution in Mexican artisanal cheese.
| Biotype | n | Fresco | Requeson | Cotija | Adobero | Oaxaca |
|---|---|---|---|---|---|---|
| Host-specific ecovars | ||||||
| Human ecovar | — | — | — | — | — | — |
| Human ecovar hemolytic | 7 (15.9) | 4 | — | 1 | 2 | — |
| Poultry ecovar | 2 (4.5) | 1 | 1 | — | — | — |
| Bovine ecovar | — | — | — | — | — | — |
| Ovine ecovar | — | — | — | — | — | — |
|
| ||||||
| Nonhost-specific (NHS) biotypes | ||||||
| K − β + CV: C∗ | 7 (15.9) | 2 | 2 | — | 2 | 1 |
| K − β + CV: A∗ | 5 (11.4) | 1 | 1 | — | 2 | 1 |
| K + β − CV: A∗ | 14 (31.8) | 2 | 2 | 3 | 5 | 2 |
| K + β + CV: A∗ | 7 (15.9) | 1 | 1 | 3 | 1 | 1 |
| K − β − CV: C∗ | 2 (4.5) | — | — | 2 | — | — |
∗Abbreviations are derived from staphylokinase (K), β-haemolysin (β), and crystal violet growth type (CV). ∗∗NHS biotypes in this study correspond to the following: K − β + CV: C (biotype A), K − β + CV: A (biotype β), K + β − CV: A (biotype C), K + β + CV: A (biotype D), and K − β − CV: C (biotype E).