Volume 13, Number 11—November 2007
Research
Human Salmonella and Concurrent Decreased Susceptibility to Quinolones and Extended-Spectrum Cephalosporins
Table 4
Resistance mechanisms among NARMS non-Typhi Salmonella with decreased susceptibility to quinolones and extended-spectrum cephalosporins, United States, 1996–2004*
Isolate | gyrA codon 83 change | gyrA codon 87 change | parC codon 57 change | parC codon 80 change | β-Lactamase isoelectric points | β-Lactamase genes |
---|---|---|---|---|---|---|
AM18280 | S83Y | WT | T57S | WT | >8.4 | blaCMY-2 |
AM09124 | S83F | WT | WT | WT | ND | ND |
AM15266 | WT | D87Y | WT | WT | ND | ND |
AM12389 | S83Y | WT | WT | WT | ND | ND |
AM15010 | WT | WT | T57S | WT | 7.0, 7.6† | blaSHV-30 |
AM03005 | S83Y | D87G | T57S | WT | ND | ND |
AM15201 | S83F | WT | T57S | WT | >8.4 | blaCMY-2 |
AM21465 | S83F | WT | T57S | WT | >8.4 | blaCMY-2 |
AM20428 | S83F | WT | WT | WT | 5.4 | blaTEM-1b |
AM06960 | S83Y | D87G | T57S | S80I | 7.4 | blaOXA-1 |
AM08081 | S83Y | D87G | T57S | S80I | 7.4 | blaOXA-1 |
AM08208 | S83Y | D87G | T57S | S80I | 7.4 | blaOXA-1 |
AM09864 | S83Y | D87G | T57S | S80I | 5.3, 6.9, 8.0 | blaTEM-1, blaOXA-9, blaSHV-12 |
AM11007 | S83Y | D87G | T57S | S80I | 7.4 | blaOXA-1 |
AM14058 | S83Y | D87G | T57S | S80I | 5.4, >8.4 | blaTEM-1b, blaCMY-23 |
AM16094 | S83Y | D87G | T57S | S80I | 7.4 | blaOXA-1 |
AM18622 | S83Y | D87G | T57S | S80I | 7.4, 7.8 | blaOXA-1 |
AM19422 | S83Y | D87G | T57S | S80I | 7.4 | blaOXA-1 |
AM20227 | S83Y | D87G | T57S | S80I | 7.4 | blaOXA-1 |
AM20256 | S83Y | D87G | T57S | S80I | 7.4 | blaOXA-1 |
AM02544 | WT | D87N | WT | WT | 5.4, 8.0 | blaTEM-1, blaOXA-1, blaSHV-12 |
AM08739 | S83Y | WT | WT | WT | 5.4, >8.4 | blaTEM-1b, blaCMY-2 |
AM11682 | S83F | WT | WT | WT | >8.4 | blaCMY-2 |
AM14364 | S83Y | WT | WT | WT | 5.4, >8.4 | blaTEM-1b, blaCMY-2 |
AM14807 | S83Y | WT | WT | WT | >8.4 | blaCMY-2 |
AM20205 | WT | D87N | WT | WT | 5.4 | blaTEM-1b |
AM19537 | S83Y | WT | T57S | WT | >8.4 | blaCMY-2 |
*NARMS, National Antimicrobial Resistance Monitoring System; WT, wild type; ND, not determined.
†Gene responsible not yet identified.
1Current affiliation: Banfield, The Pet Hospital, Philadelphia, Pennsylvania, USA
2Current affiliation: Washington State University, Pullman, Washington, USA