Klebsiella pneumoniae
MDR: multidrug-resistant
HGT: horizontal gene transfer
ARGs: antibiotic resistance genes
CRISPR: Clustered regularly interspersed short Palindromic repeats
Cas: CRISPR-associated
MGEs: mobile genetic elements
DRs: direct repeats
pre-crRNA: precursor CRISPR RNA
crRNA: CRISPR RNA
MFE: minimum free energy
KW: the non-parametric Kruskal-Wallis
PAM: protospacer adjacent motif
MLST: multiple locus sequence typing
STs: sequence types