Table 1.

The prevalence of the virulence factor genes with respect to the presence of carbapenem resistance mechanisms (n = 107); (*)—a statistically significant difference (χ² test) noted between the exoS gene frequency in the two strain subgroups is indicated (p < 0.001).

Subgroup	Gene	phzM	phzS	exoT	exoY	exoU	toxA	algD	exoS *	pilA	pilB
Carbapenemase (−)	n = 74	74	74	74	73	73	72	69	57	15	4
	%	100.0	100.0	100.0	98.6	98.6	97.3	93.2	77.0	20.3	5.4
Carbapenemase (+)	n = 33	33	33	33	33	33	31	30	6	2	1
	%	100.0	100.0	100.0	100.0	100.0	93.9	90.9	18.2	6.1	3.0