Table 1.
Antimicrobial dilution range for 95 Salmonella enterica ser. Enteritidis strains isolated from poultry sources and human feces according to minimal inhibitory concentration (MIC) values.
| Antimicrobial Agent | Antimicrobial Dilution Range (µg/mL) | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.015 | 0.03 | 0.06 | 0.12 | 0.25 | 0.5 | 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128 | 256 | 512 | 1024 | |
| Poultry (n = 51) | |||||||||||||||||
| Gentamicin | x | x | x | x | x | 45 | 3 | 1 | 2 | x | x | x | x | x | |||
| Ampicillin | x | x | x | x | x | x | 11 | 35 | 4 | 1 | x | x | x | x | |||
| Tazobactam | x | x | x | x | x | 49 | 2 | x | x | x | x | x | x | x | |||
| Cefotaxime | x | x | x | x | 49 | 2 | x | x | x | x | x | x | x | x | |||
| Meropenem | x | 51 | x | x | x | x | x | x | |||||||||
| Nalidixic acid | x | x | x | x | x | x | x | x | 24 | 1 | 5 | 1 | 4 | (16 *) | x | x | x |
| Ciprofloxacin | 2 | 18 | 1 | 2 | 12 | 15 | 1 | x | x | x | x | x | x | x | |||
| Chloramphenicol | x | x | x | x | x | x | x | x | x | 49 | 1 | 1 | x | x | x | ||
| Azithromycin | x | x | x | x | x | x | x | 16 | 35 | x | x | x | x | ||||
| Colistin | x | x | x | x | x | x | 6 | 2 | 29 | 14 | x | x | x | x | x | x | |
| Tetracycline | x | x | x | x | x | x | x | 34 | 4 | 2 | 4 | 5 | 1(1 *) | x | x | x | x |
| Tigecycline | x | x | x | x | 36 | 15 | x | x | x | x | x | x | x | ||||
| Sulfamethoxazole | x | x | x | x | x | x | x | x | x | 11 | 8 | 2 | 1 | 1 | (28 *) | ||
| Trimethoprim | x | x | x | x | 12 | 36 | 12 | 1 | x | x | x | x | x | ||||
| Human (n = 44) | |||||||||||||||||
| Gentamicin | x | x | x | x | x | 39 | 5 | x | x | x | x | x | |||||
| Ampicillin | x | x | x | x | x | x | 5 | 35 | 3 | 1 | x | x | x | x | |||
| Tazobactam | x | x | x | x | x | 44 | x | x | x | x | x | x | x | ||||
| Cefotaxime | x | x | x | x | 44 | x | x | x | x | x | x | x | x | ||||
| Meropenem | x | 44 | x | x | x | x | x | x | |||||||||
| Nalidixic acid | x | x | x | x | x | x | x | x | 18 | 1 | 2 | 15 | (8 *) | x | x | x | |
| Ciprofloxacin | 1 | 18 | 2 | 1 | 13 | 9 | x | x | x | x | x | x | x | ||||
| Chloramphenicol | x | x | x | x | x | x | x | x | x | 42 | 2 | x | x | x | |||
| Azithromycin | x | x | x | x | x | x | x | 7 | 37 | x | x | x | x | ||||
| Colistin | x | x | x | x | x | x | 9 | 13 | 22 | x | x | x | x | x | x | ||
| Tetracycline | x | x | x | x | x | x | x | 37 | 6 | 1 | x | x | x | x | |||
| Tigecycline | x | x | x | x | 27 | 17 | x | x | x | x | x | x | x | ||||
| Sulfamethoxazole | x | x | x | x | x | x | x | x | x | 14 | 22 | 1 | (7 *) | ||||
| Trimethoprim | x | x | x | x | 12 | 30 | 2 | x | x | x | x | x | |||||
Breakpoints were adopted from The European Committee on Antimicrobial Susceptibility Testing (EUCAST) and Clinical and Laboratory Standards Institute (CLSI), when available; breakpoints for azithromycin and tigecycline are unavailable; numbers: number of strains with each MIC value; lack of number; strains with each MIC value are not described; grey square: resistant to an antimicrobial; white square: susceptible to an antimicrobial; x: the dilution range marked in this MIC Sensititre EU Surveillance Salmonella/E. coli EUVSEC commercial plates was not examined for an antimicrobial; * MIC value greater than maximum tested.