Table 1.

Clinical and microbiological characteristics of patients with hvKp or cKp (n = 86)

	hvKp (n = 19)	cKp (n = 67)	p value
Age (years), median (IQR)	74 (68–75)	78 (68–84)	0.064
Male, n (%)	14 (74)	38 (57)	0.18
Comorbidity, n (%)
Diabetes mellitus	8 (42)	22 (33)	0.45
Malignancy	0 (0)	24 (36)	0.002
Immunocompromised conditions	2 (11)	9 (13)	0.54
Liver cirrhosis	3 (16)	1 (1)	0.032
Chronic kidney disease	2 (11)	6 (9)	0.57
Charlson index, median (IQR)	2 (1–3)	3 (2–5)	0.052
Community acquired, n (%)	11 (58)	34 (51)	0.58
Admitted to ICU, n (%)	3 (16)	8 (12)	0.46
In-hospital mortality, n (%)	6 (32)	16 (24)	0.34
Microbiological profile, n (%)
Positive string test	16 (84)	38 (57)	0.029
O1*	17 (89)	36 (54)	0.005
O2*	1 (5)	21 (31)	0.016
O3	1 (5)	8 (12)	0.36
K1	8 (42)	5 (7)	0.001
K2	6 (32)	22 (33)	0.92
Aerobactin	16 (84)	36 (54)	0.016
Yersiniabactin	12 (63)	30 (45)	0.16
Salmochelin	14 (74)	35 (52)	0.096
Colibactin	7 (37)	16 (24)	0.26
rmpA	17 (89)	34 (51)	0.002
rmpA2	10 (53)	32 (48)	0.71

hvKp, hypervirulent K. pneumoniae; cKp, classical K. pneumoniae; IQR, interquartile range

*The three O1/O2v2 strains in cKp