Table 1.
Shigella drug resistance patterns with associated serotypes, plasmid profiles, and PFGE fingerprint patterns from California, 2004-2005.
| Resistance pattern to the NARMS antimicrobial panel | % of isolates with resistance profile (no.) | Plasmid profile groups detected (no.)a | Species of isolates with plasmids (no.) | PFGE patterns |
|---|---|---|---|---|
| STR, FIS, TET, SXT | 33% (14) | II, X(3), VIII | S. sonnei (4), S. flexneri | III, V, VI, IX, X |
| AMP, STR, FIS, TET, SXT | 14% (6) | II(4), VI | S. sonnei (5) | I, IV, VII, VIII, XI, XII |
| AMP, CHL, STR, FIS, TET | 10% (4) | none | none | |
| AMP, CHL, TET | 7% (3) | VII | S. flexneri 3a | XX, XXIII, XV |
| AMP, CHL, STR, FIS, TET, SXT | 7% (3) | IV(2), V | S. flexneri 3a (2), S. sonnei | |
| TET | 5% (2) | I, IV | S. flexneri 1b (2) | XIX |
| AMP, CHL, FIS, TET | 5% (2) | IV(2) | S. flexneri 2a (2) | XVII |
| CHL, STR, FIS, TET, SXT | 5% (2) | V(2) | S. flexneri 1c (2) | XV |
| AMP, CHL, FIS, TET, SXT | 2% (1) | IV | S. flexneri 2a | XVIII |
| AMP, KAN, STR, FIS | 2% (1) | IV | S. sonnei | XIII |
| CHL, FIS, TET, SXT | 2% (1) | III | S. flexneri Y var. | XXIV |
| AMP, CHL, STR, TET | 2% (1) | IX | S. flexneri 1b | XIV |
| AMP, STR, FIS, SXT | 2% (1) | IX | S. sonnei | |
| AMC, AMP, GEN, STR, FIS | 2% (1) | IV | S. flexneri |
a Of the 42 isolates tested, 62% (n = 26) had plasmids detected while 38% (n = 16) did not.