TABLE 1.
Antimicrobial resistance and PFGE profiles of S. dysenteriae type 1 strains isolated from patients with sporadic and outbreak cases of dysentery
| Strain | Place (location)/yr of isolation | Case type | MIC (μg/ml)
|
Resistance profilea | Pulsotype | |||
|---|---|---|---|---|---|---|---|---|
| Nalidixic acid | Ciprofloxacin | Norfloxacin | Ofloxacin | |||||
| HU8 | Tripura (northeastern state)/1988 | Outbreak | 1 | 0.08 | 0.027 | 0.047 | ACoTCNa | A |
| HU10 | Tripura (northeastern state)/1988 | Outbreak | 1.25 | 0.012 | 0.047 | 0.047 | ACoTCNa | A |
| HU29 | Tripura (northeastern state)/1988 | Outbreak | 1 | 0.006 | 0.023 | 0.047 | ACoTCNa | A |
| BCH518 | Calcutta (West Bengal)/1995 | Sporadic | >256 | 0.094 | 0.19 | 0.038 | ACoTCNa | B1 |
| D1 | Diamond Harbor (West Bengal)/2002 | Outbreak | >256 | 6 | 16 | 8 | ACoTCNaNxLoOfPe | B2 |
| D2 | Diamond Harbor (West Bengal)/2002 | Outbreak | >256 | 4 | 12 | 8 | ACoTCNaNxLoOfPe | B3 |
| D44 | Diamond Harbor (West Bengal)/2002 | Outbreak | >256 | 4 | 16 | 12 | ACoTCNaNxLoOfPe | B |
| 18 | Siliguri (North Bengal)/2002 | Outbreak | >256 | 2 | 12 | 12 | ACoTCNaNxLoOfPe | B |
| 21 | Siliguri (North Bengal)/2002 | Outbreak | >256 | 6 | 16 | 12 | ACoTCNaNxLoOfPe | B |
| 25 | Siliguri (North Bengal)/2002 | Outbreak | >256 | 2 | 12 | 12 | ACoTCNaNxLoOfPe | B4 |
| NK2217 | Calcutta (West Bengal)/2002 | Sporadic | >256 | 6 | 24 | 12 | ACoTCNaNxLoOfPe | B5 |
| NK2490 | Calcutta (West Bengal)/2002 | Sporadic | >256 | 4 | 12 | 12 | ACoTCNaNxLoOfPe | B6 |
| NK2678 | Calcutta (West Bengal)/2002 | Sporadic | >256 | 4 | 12 | 12 | ACoTCNaNxLoOfPe | B7 |
| NT4359 | Calcutta (West Bengal)/2002 | Sporadic | >256 | 4 | 12 | 12 | ACoTCNaNxLoOfPe | C |
| H14174 | Calcutta (West Bengal)/2002 | Sporadic | >256 | 6 | 16 | 10 | ACoTCNaNxLoOfPe | B8 |
| H16576 | Calcutta (West Bengal)/2002 | Sporadic | >256 | 6 | 16 | 8 | ACoTCNaNxLoOfPe | B9 |
| Az11 | Aizal (Mizoram State)/2003 | Outbreak | >256 | 3 | 6.0 | 16 | ACoTCNaNxLoOfPe | B |
a
Abbreviations: A, ampicillin; Co, co-trimoxazole; T, tetracycline; C, chloramphenicol; Na, nalidixic acid; Nx, norfloxacin; Lo, lomefloxacin; Of, ofloxacin; Pe, pefloxacin.