TABLE 2.
Phenotypic and genotypic characteristics of seven representative S. Infantis isolates from each PFGE profile
| Strain ID | Year | Facility | Source | PFGE profile | Antimicrobial resistance pattern (phenotype) | WGS analysis | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Antimicrobial resistance genes (genotype) | MLST ST | pMLST (Incl1) | Plasmid incompatibility group | |||||||
| Chromosome | Plasmid | |||||||||
| CS05S05 | 2014 | A | Carcass after chilling | III | Pansusceptible | aac(6′)-ly, acrD, kdpE, emrA, emrB, emrR, mdtK, msbA | NFa | 32 | NF | NF |
| CS65S01 | 2021 | C | Carcass after chilling | I | Pansusceptible | aac(6′)-ly, acrD, kdpE, emrA, emrB, emrR, mdtK, msbA | NF | 32 | NF | NF |
| CS72S01 | 2021 | F | Carcass before scalding | V | NAL | aac(6′)-ly, acrD, kdpE, emrA, emrB, emrR, mdtK, msbA | APH(3’)-Ia, dfrA14 | 32 | ardA_11, trbA_8, sogS_14 | IncFIB(pESI) |
| CS72S03 | 2021 | F | Feces from crates | VI | AMP-XNL-AXO-CHL-NAL-STR-FIS-TET-SXT | aac(6′)-ly, acrD, kdpE, emrA, emrB, emrR, mdtK, msbA | CTX-M-65, floR, tet(A), AAC (3)-IV, aadA1, APH(3’)-Ia, ANT(3’’)-IIa, APH (4)-Ia, sul1, dfrA14 | 32 | ardA_11, trbA_8, sogS_14, pilL_3 | IncFIB(pESI) |
| CS76S06 | 2022 | I | Carcass after evisceration | IV | Pansusceptible | aac(6′)-ly, acrD, kdpE, emrA, emrB, emrR, mdtK, msbA | NF | 32 | NF | NF |
| CS78S02 | 2022 | B | Carcass after chilling | II | AMP-XNL-AXO-CHL-NAL-STR-FIS-TET-SXT | aac(6′)-ly, acrD, kdpE, emrA, emrB, emrR, mdtK, msbA | CTX-M-65, floR, tet(A), AAC (3)-IV, aadA1, ANT(3’’)-IIa, APH (4)-Ia, sul1, dfrA14 | 32 | ardA_11, trbA_8, sogS_14, pilL_3 | IncFIB(pESI) |
| CS81S04 | 2022 | J | Feces from crates | I | AMP-XNL-AXO-CHL-NAL-STR-FIS-TET-SXT | aac(6′)-ly, acrD, kdpE, emrA, emrB, emrR, mdtK, msbA | CTX-M-65, floR, tet(A), AAC (3)-IV, aadA1, APH(3’)-Ia, ANT(3’’)-IIa, APH (4)-Ia, sul1, dfrA14 | 32 | ardA_11, trbA_8, sogS_14, pilL_3 | IncFIB(pESI) |
a
NF, not found.