Table 3 Characterization of 43 nalidixic acid-resistant Escherichia coli isolates from humans, chickens, and poultry farm/market environments
Isolate number | Origin | Mutations to the QRDRs | Other mutations | ||
|---|---|---|---|---|---|
gyrA | parC | parE | pmrB | ||
ma 001 | Chicken (M) | S83L | S80I | - | - |
ma 003 | Environment (M) | S83L | - | - | - |
ma 008 | Chicken (M) | S83L | - | - | V161G |
ma 010 | Chicken (M) | S83L | - | - | - |
ma 013 | Chicken (M) | S83L + D87N | S80I | S458A | - |
ma 021 | Environment (M) | S83L + D87N | S80I | S458A | - |
ma 024 | Environment (M) | S83L | S80I | - | - |
ma 038 | Human (M) | S83L | - | - | - |
ma 055 | Chicken (M) | S83L | S80I | - | - |
ma 069 | Human (M) | S83A | - | - | - |
ma 078 | Human (M) | S83L | - | - | - |
ma 105 | Human (F) | S83L | - | - | - |
ma 120 | Environment (F) | S83L | S80I | - | - |
ma 121 | Chicken (F) | S83L | - | - | - |
ma 126 | Human (F) | S83L + D87N | S80I | L416F | - |
ma 138 | Human (M) | S83L + D87N | S80I | - | - |
ma 140 | Chicken (M) | S83L + D87N | S80I + A56T | - | - |
ma 143 | Human (F) | S83L + D87N | S80I | - | - |
ma 146 | Chicken (F) | S83L + D87N | S80I + E84G | - | - |
ma 182 | Environment (F) | S83L + D87N | S80I | S458A | - |
ma 197 | Chicken (F) | S83L + D87N | A56T + S80I + E84G | - | - |
ma 218 | Environment (F) | S83L + D87N | S80I | - | - |
ma 233 | Environment (F) | S83L | S80I | - | - |
ma 234 | Chicken (F) | S83L + D87N | S80I | - | - |
ma 236 | Human (F) | S83L + D87N | S80I | S458A | - |
ma 238 | Chicken (F) | S83L | S80I | - | - |
ma 246 | Chicken (M) | S83L + D87N | S80I | - | - |
ma 249 | Environment (M) | S83L | - | - | - |
ma 253 | Environment (F) | S83L + D87N | S80I | - | - |
ma 261 | Human (M) | S83L + D87N | S80I | L416F | - |
ma 263 | Chicken (F) | S83L + D87N | S80I | L416F | - |
ma 281 | Chicken (F) | S83L | - | - | - |
ma 282 | Environment (F) | S83L | - | - | - |
ma 294 | Chicken (F) | S83L | - | - | - |
ma 305 | Chicken (F) | S83L + D87N | S80I + A56T | - | - |
ma 312 | Chicken (F) | S83L + D87N | S80I + A56T | - | - |
ma 330 | Chicken (F) | S83L + D87N | S80I | S458A | - |
ma 331 | Chicken (F) | S83L + D87Y | S80I | S458A | - |
ma 384 | Human (F) | - | A56T | - | - |
ma 390 | Human (F) | - | A56T | - | - |
ma 392 | Chicken (F) | - | S57T | I355T | - |
ma 415 | Human (F) | S83L + D87N | S80I | - | - |
ma 420 | Human (F) | - | A56T | - | - |
ma 421 | Human (F) | S83L | - | - | - |