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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