Table 8. Mutations of gyrA in QRDRs in ciprofloxacin-resistant Salmonella isolates (n = 8).
| Sample type | Serovar ( n ) | gyrA mutation | PMQR | MIC (µg/mL) | ||
|---|---|---|---|---|---|---|
| CIP | ENR | OXO | ||||
| Carcass rinse | Virchow (1) | – | qnrS | 4 | 4 | 8 |
| Saintpaul (1) | C248A | qnrS | 4 | 2 | 16 | |
| Intestine | Saintpaul (4) | C248A | qnrS | 4–8 | 2–8 | 4–32 |
| Cultivation water | Neukoelln (1) | – | qnrS | 4 | 2 | 4 |
| Chartes (1) | C248A | qnrS | >32 | >64 | >128 | |
Notes.
- CIP
- ciprofloxacin
- ENR
- enrofloxacin
- OXO
- oxolinic acid