| ABC | ATP-binding cassette |
| CNF-1 | Cytotoxic Necrotizing Factor type I |
| DAEC | Diffusely adherent Escherichia coli |
| dsDNA | Double-stranded DNA |
| dsRNA | Double-stranded RNA |
| EAggEC | Enteroaggregative Escherichia coli |
| EHEC | Enterohaemorrhagic Escherichia coli |
| EIEC | Enteroinvasive Escherichia coli |
| EPEC | Enteropathogenic Escherichia coli |
| ESBL | Extended spectrum β-lactamase |
| ETEC | Enterotoxigenic Escherichia coli |
| ExPEC | Extraintestinal Escherichia coli |
| HGT | Horizontal gene transfer |
| IBC | Intracellular bacterial communities |
| IS | Insertion sequence |
| KTP | Kindey transplant patients |
| MATE | Multidrug and toxic compound extrusion |
| MDR | Multi drug resistant |
| MGE | Mobile genetic element |
| MIC | Minimum inhibitory concentration |
| MPF | Membrane fusion protein |
| NBD | Nucleotide-binding domain |
| NGS | Next Generation Sequencing |
| NMEC | Neonatal Meningitis Escherichia coli |
| PMQR | Plasmid-mediated quinolone resistance |
| Qnr | Quinolone resistance |
| ROS | Reactive oxygen species |
| SMR | Small multidrug resistance |
| ssDNA | Single-stranded DNA |
| TE | Transposable element |
| TMD | Transmembrane domain |
| UPEC | Uropathogenic Escherichia coli |
| UTI | Urinary tract infection |