TABLE 3.
Number of isolates with multidrug resistance, by serotypea
| S. enterica serotype | Total | Pan-susceptible (%) | MDR (%) | MDR, ≥5 drugs (%) | STR-SMX-TET (%) | AMP-STR-SMX-TET (%) | AMP-CHL-STR-SMX-TET (%) |
|---|---|---|---|---|---|---|---|
| All Salmonella | 2,149 | 1,720 (80.0) | 165 (7.7) | 62 (2.9) | 91 (4.2) | 60 (2.8) | 33 (1.5) |
| Enteritidis | 284 | 263 (92.6) | 9 (3.2) | 4 (1.4) | 5 (1.8) | 5 (1.8) | 3 (1.1) |
| Typhimurium | 263 | 164 (62.4) | 61 (23.2) | 30 (11.4) | 34 (12.9) | 28 (10.6) | 18 (6.8) |
| Newport | 178 | 136 (76.4) | 22 (12.4) | 10 (5.6) | 15 (8.4) | 11 (6.2) | 3 (1.7) |
| Heidelberg | 149 | 84 (56.4) | 22 (14.8) | 2 (1.3) | 14 (9.4) | 1 (0.7) | 0 (0) |
| Saintpaul | 105 | 76 (72.4) | 12 (11.4) | 4 (3.8) | 2 (1.9) | 1 (1) | 0 (0) |
| Other serotypes | 1,069 | 920 (86.1) | 23 (2.2) | 6 (0.6) | 13 (1.2) | 6 (0.6) | 4 (0.4) |
| Not serotyped | 101 | 77 (76.2) | 16 (15.8) | 6 (5.9) | 8 (7.9) | 8 (7.9) | 5 (5) |
a
MDR, multidrug resistant; STR, streptomycin; SMX, sulfamethoxazole; TET, tetracycline; AMP, ampicillin; CHL, chloramphenicol.