Table 2.
Antibiotic susceptibility of S. Enteritidis strains (n = 345) isolated from different ecological niches in regions of Siberia and the Far East of Russia.
| S. Enteritidis Strains Isolated from Different Ecological Niches (n = 345) | Susceptibility | Number of Strains (%) | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AMP | CEF | CXM | CTX | FEP | STR | KAN | GEN | AMK | TET | NAL | CIP | IMI | CHL | SXT | ||
| Sporadic cases (n = 255) |
R 1 | 2.7 | 0.4 | 0.4 | 1.6 | 0.7 | 0.4 | 5.9 | 53.7 | 0.4 | 5.0 | 1.2 | ||||
| I 2 | 0.4 | 5.9 | 0.4 | 0.4 | 11.4 | 51.8 | 14.1 | 9.0 | 1.6 | 2.0 | 8.2 | 0.4 | ||||
| S 3 | 97.3 | 99.2 | 94.1 | 99.2 | 99.6 | 87,1 | 47.4 | 85.5 | 91.0 | 92.5 | 44.3 | 91.4 | 100 | 95.0 | 98.4 | |
| Outbreak cases (n = 41) |
R | 2.4 | 14.6 | 61.0 | 12.2 | |||||||||||
| I | 7.3 | 4.9 | 34.1 | 2.4 | 2.4 | |||||||||||
| S | 100 | 100 | 92.7 | 100 | 100 | 92.7 | 65.9 | 97.6 | 100 | 85.4 | 36.7 | 100 | 100 | 87.8 | 100 | |
| Food (n = 46) |
R | 2.2 | 4.3 | 52.2 | 4.3 | |||||||||||
| I | 8.7 | 2.2 | 32.6 | 8.7 | 2.2 | 2.2 | 4.3 | 10.9 | ||||||||
| S | 97.8 | 100 | 91.3 | 100 | 100 | 97.8 | 67.4 | 91.3 | 97.8 | 91.3 | 43.5 | 98.1 | 100 | 95.6 | 100 | |
| Environment (n = 3) |
R | 66.7 | 66.7 | 66.7 | 33.3 | |||||||||||
| I | 33.3 | |||||||||||||||
| S | 100 | 100 | 100 | 100 | 100 | 100 | 66.7 | 100 | 100 | 33.3 | 33.3 | 100 | 100 | 33.3 | 66.7 | |
1 R—resistant, 2 I—Intermediate, 3 S—Susceptible. Antibiotics used: Ampicillin 10 μg (AMP), cephalexin 30 μg (CEF), cefuroxime 30 μg (CXM), cefotaxime 30 μg (CTX), cefepime 30 μg (FEP), streptomycin 10 μg (STR), kanamycin 30 μg (KAN), gentamicin 30 μg (GEN), amikacin 30 μg (AMK), tetracycline 30 μg (TET), nalidixic acid 30 μg (NAL), ciprofloxacin 5 μg (CIP), imipenem 10 μg (IMI), chloramphenicol 30 μg (CHL), and trimethoprim 1.25 μg/sulfamethoxazole 23.75 μg (SXT).