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Table 2 Microbiological and molecular-epidemiological characteristics of K. pneumoniae strains isolated from KP-PLA patients

From: Clinical, microbiological, and molecular epidemiological characteristics of Klebsiella pneumoniae-induced pyogenic liver abscess in southeastern China

Characteristic

Value (n = 163)

Hypermucoviscosity

50 (30.7)

Capsular serotypes

 K1

66 (40.5)

 K2

31 (19.0)

 K5

8 (4.9)

 K20

3 (1.8)

 non-type

54 (33.1)

Virulence genes

 aerobactin

139 (85.3)

 rmpA

155 (95.1)

 iroN

40 (24.5)

 kfuBC

116 (71.2)

 wcaG

112 (68.7)

 ybtA

120 (73.6)

 magA

74 (45.4)

 fimH

156 (95.7)

 mrkD

163 (100.0)

 uge

147 (90.2)

 entB

144 (88.3)

 ureA

145 (89.0)

Antimicrobial resistance

 Ampicillin

163 (100.0)

 Ampicillin/sulbactam

17 (10.4)

 Piperacillin/tazobactam

2 (1.2)

 Cefazolin

10 (6.1)

 Cefotetan

2 (1.2)

 Aztreonam

5 (3.1)

 Ceftriaxone

6 (3.7)

 Ceftazidime

3 (1.8)

 Cefepime

4 (2.5)

 Cefoperazone/sulbactam

0 (0.0)

 Ertapenem

3 (1.8)

 Imipenem

5 (3.1)

 Ciprofloxacin

5 (3.1)

 Levofloxacin

4 (2.5)

 Gentamicin

2 (1.2)

 Tobramycin

2 (1.2)

 Amikacin

1 (0.6)

 SMZ-TMP

6 (3.7)

 Nitrofurantoin

34 (20.9)

MDR strains

12 (7.4)

CRKP strains

6 (3.7)

Multilocus sequence typing

 ST23

63 (38.7)

 ST29

10 (6.1)

 ST65

14 (8.6)

 ST86

10 (6.1)

  1. Values are presented as No. (%) of isolates
  2. MDR Multi-drug resistant, CRKP Carbapenems-resistant K. pneumoniae, SMZ-TMP Sulfamethoxazole and trimethoprim