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Table 3 Distribution of virulence factors in carbapenem resistant and susceptible K. pneumoniae strains

From: Co-existence of virulence factors and antibiotic resistance in new Klebsiella pneumoniae clones emerging in south of Italy

Virulence factors

Locus-Genes

K. pneumoniae CR

n (%)

K. pneumoniae CS

n (%)

P value

Type 3 fimbries

mrk operon

25 (100%)

25 (100%)

1.000

Capsule

wzi

25 (100%)

23 (92%)

0.552

Iron acquisition systems

ybt operon

10 (40%)

15 (60%)

0.089

Aerobactin iron acquisition siderophore

(iucABCD)

3 (12%)

3 (12%)

1.000

Klebsiella

Ferric ionic-uptake system

(kfuABC)

1 (4%)

7 (28%)

0.020

Two-component system

kvgAS

1 (4%)

7 (28%)

0.020

Bacteriocin

Microcin E492

1 (4%)

7 (28%)

0.020