Table 1.
Phenotypic antibiotic resistance patterns and rates of antibiotic-resistant genes in S. aureus samples.
| Samples | Meth | Pen | Kan | Erh | Gen | Tet | Strep | Van | Chlo | AML | TC | PRL | FEP | CTX | CAZ | IMI | ETP | MRP | ATM |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| gh2 | 0 | 0 | 0 | 0 | 0 | 10 | 8 | 15 | 22 | 20 | 14 | 0 | 0 | 0 | 0 | 7 | 0 | 10 | 0 |
| gh22 | 0 | 0 | 0 | 0 | 0 | 11 | 8 | 14 | 21 | 14 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 0 |
| gh11 | 16 | 0 | 0 | 20 | 0 | 23 | 8 | 14 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 0 |
| gh19 | 0 | 0 | 0 | 0 | 0 | 12 | 10 | 14 | 25 | 12 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| gh20 | 15 | 0 | 12 | 20 | 12 | 20 | 8 | 12 | 23 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 0 |
| gh21 | 0 | 8 | 12 | 0 | 10 | 8 | 8 | 13 | 20 | 18 | 13 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 0 |
| gh34 | 18 | 9 | 17 | 20 | 15 | 23 | 10 | 13 | 22 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 0 |
| gh36 | 0 | 0 | 17 | 23 | 15 | 25 | 10 | 15 | 25 | 15 | 18 | 12 | 22 | 18 | 15 | 14 | 18 | 20 | 0 |
| gh5-t2460 | 0 | 0 | 11 | 0 | 11 | 10 | 0 | 15 | 22 | 14 | 10 | 10 | 0 | 0 | 0 | 0 | 0 | 8 | 0 |
| gh7-t338 | 16 | 0 | 14 | 9 | 12 | 25 | 8 | 14 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| gh27-t2460 | 0 | 0 | 0 | 22 | 0 | 25 | 9 | 14 | 23 | 14 | 20 | 14 | 20 | 20 | 14 | 25 | 25 | 25 | 0 |
| gh97-t324 | 0 | 10 | 8 | 27 | 18 | 28 | 15 | 19 | 29 | 13 | 8 | 9 | 15 | 14 | 0 | 0 | 0 | 14 | 0 |
| gh100-t693 | 19 | 20 | 21 | 29 | 20 | 28 | 14 | 16 | 29 | 18 | 20 | 14 | 15 | 15 | 9 | 25 | 20 | 25 | 0 |
We tested the following 19 antibiotic discs (Liofilchem, Roseto degli Aburzzi, Italy). We measured the diameter (mm) of the inhibition zones and determined each isolate as resistant or susceptible to antimicrobial agents based on CLSI guidelines and criteria and Liofilchem quality control.