TABLE 4.
Resistance to antibiotics in S. sonnei and S. flexneri in the two periods studieda
| Speciesb | Years | No. of strains | No. (%) of resistant strains
|
|||||
|---|---|---|---|---|---|---|---|---|
| AMP | AMC | CHL | GEN | SXT | NAL | |||
| S. sonnei | 1985–1987 | 95 | 48 (51) | 0 (0) | 1 (1) | 0 (0) | 54 (57) | ND |
| 1995–1998 | 30 | 4 (13) | 0 (0) | 1 (3.3) | 0 (0) | 27 (90) | 1 (3) | |
| S. flexneri | 1985–1987 | 27 | 19 (70) | 3 (11) | 2 (7) | 1 (4) | 13 (48) | ND |
| 1995–1998 | 19 | 17 (89) | 4 (21) | 18 (95) | 0 (0) | 10 (53) | 1 (5) | |
a
All strains were susceptible to cefotaxime and ciprofloxacin. Abbreviation: AMC, co-amoxiclav; AMP, ampicillin; CHL, chloramphenicol; GEN, gentamicin; SXT, trimethoprim-sulfamethoxazole; NAL, nalidixic acid; ND, not determined.
b
The imported strains (traveler's diarrhea) were S. sonnei (n = 11) and S. flexneri (n = 9).