Table 1.

bla_KPC and virulence-associated factors of the 285 K. pneumoniae isolated from BSIs

Characteristics	Total (n = 285)	bla KPC +	bla KPC −	P valuea	HMKP	cKP	P valueb
		(n = 95)	(n = 190)		(n = 69)	(n = 216)
bla KPC	95 (33.3)	–	–	–	3 (4.3)	92 (42.6)	< 0.001
Virulence factors
HM phenotype	69 (24.2)	3 (3.2)	66 (34.7)	< 0.001	–	–	–
K1	28 (9.8)	1 (1.1)	27 (14.2)	< 0.001	18 (26.1)	10 (4.6)	< 0.001
K2	22 (7.7)	0	22 (11.6)	0.001	21 (30.4)	1 (0.5)	< 0.001
K5	3 (1.1)	0	3 (1.6)	0.55	2 (2.9)	1 (0.5)	0.15
K20	3 (1.1)	1 (1.1)	2 (1.1)	0.99	2 (2.9)	1 (0.5)	0.15
K54	6 (2.1)	0	6 (3.2)	0.18	4 (5.8)	2 (0.9)	0.03
K57	3 (1.1)	0	3 (1.6)	0.55	3 (4.3)	N	0.01
K-nontypable	220 (77.2)	93 (97.9)	127 (66.8)	< 0.001	19 (27.5)	201 (93.1)	< 0.001
magA	24 (8.4)	0	24 (12.6)	< 0.001	17 (24.6)	7 (3.2)	< 0.001
rmpA	90 (31.6)	2 (2.1)	88 (46.3)	< 0.001	62 (89.9)	28 (13.0)	< 0.001

Data are presented as No. (%) unless otherwise specified

Abbreviations: HM hypermucoviscous, HMKP hypermucoviscous K. pneumoniae, cKP classic K. pneumoniae

^abla_KPC⁺ vs bla_KPC⁻

^bHMKP vs cKP